Thong-shaped holder for use with absorbent article

ABSTRACT

A thong-shaped holder for holding an article, such as an absorbent article, in close bodily contact in the pudendal region of the wearer. The holder comprises a front region, a crotch region having a specified Crotch Holding Force, and a rear region. The crotch region of the holder typically is elastically extensible in both the longitudinal and lateral directions. The holder provides an upward holding force against the article in the crotch region to hold the article in close bodily contact. A system comprising the thong-shaped holder and an article for use therewith, and a method for holding such an article in close bodily contact by wearing the holder, is also disclosed.

FIELD OF THE INVENTION

The present invention relates to a thong-shaped holder for holding anarticle in close bodily contact in the pudendal region of the wearer.More particularly, the invention relates to such a holder for an articlehaving a compatible shape and size, such as a thong sanitary pad orurinary incontinence pad. The invention also relates to a systemcomprising the thong-shaped holder and an article for use therewith, anda method for holding such an article in close bodily contact by wearingthe holder.

BACKGROUND OF THE INVENTION

Disposable absorbent articles are commercially available in a widevariety of configurations for absorbing and retaining urine, menstrualfluids and other vaginal discharges. Unfortunately, such articles mayleak along their periphery due to poor fit or improper placement. Suchleakage frequently results in soiling of a wearer's undergarments,clothing or bedding.

To provide additional protection against leakage, it is known to use awashable and reusable garment, such as a menstrual short or panty, incombination with a disposable absorbent pad. U.S. Pat. No. 4,813,950,Branch, discloses a washable menstrual panty having an outer lining ofspandex, soft tricot, etc. that provides a “skin tight or almost skintight” fit. Similarly, existing Japanese-style menstrual shorts act likea girdle or a tight fitting panty that attempts to hold an absorbentarticle in the wearer's pudendal region. However, the tight fit of suchundergarments has been reported to be uncomfortable to wearers, andthere is no apparent provision for directly lifting an absorbent articleto a position close to a wearer's pudendal area.

A menstrual short panty having an elastic piece fixed to the front andrear of the crotch region in an elongated state is described in U.S.Pat. No. 3,608,551, Seijo. The elastic piece is said to keep a sanitarypad raised and in contact with the body irrespective of physicalmovements. While such a device may improve pad-to-body contact along acenterline of a wearer's body, the device is unlikely to lift anabsorbent pad into conformity with the external surface of a wearer'slabia. Further, the narrow central elastic piece may cause the device tobe uncomfortable to wearers because all of the lifting force appears tobe concentrated along the centerline.

U.S. Pat. No. 6,393,621, Redwine et al., discloses undergarments havinga crotch region with a longitudinal stretch control member and aplurality of angled stretch control members that limit stretch in thelongitudinal and lateral directions and cause the crotch region toconform to the wearer's skin. The rear region has a lifting member thecooperates with the rear region, the front region and the longitudinalstretch control member to provide a “z-direction” biasing force thatcauses the crotch region and an absorbent article disposed thereon to belifted into close bodily contact when the undergarment is worn. Suchundergarments provide improved fit and performance, but can still resultin undesirable leakage during use.

PCT Application WO 99/25289 describes a system comprising anundergarment for supporting an absorbent article in sustained closecontact with a wearer's body. The absorbent article is said to beflexible under the body-contacting forces that are applied by thesupporting garment so that it conforms to the wearer's body.

While the above patents and applications disclose various undergarmentsfor holding absorbent articles against the body, there is a continuingneed for a holder capable of holding an absorbent article in closebodily contact in the pudendal region to provide improved leakageprotection and wearer comfort.

SUMMARY OF THE INVENTION

The present invention relates to a thong-shaped holder for holding anarticle in close bodily contact in the pudendal region, said holderhaving a longitudinal centerline defining a longitudinal direction and alateral centerline defining a lateral direction, said holder comprising:

-   -   a) a front region;    -   b) a crotch region attached to the front region, said crotch        region having a Crotch Holding Force (CHF-4.0) of greater than        about 0.1 kgf and a Crotch Holding Force (CHF-5.5) of less than        about 1.0 kgf; and    -   c) a rear region attached to the front and crotch regions and        cooperating with the front region to provide an adjustable        waistband.

The invention also relates to a thong-shaped holder for holding anarticle in close bodily contact in the pudendal region, said holderhaving a longitudinal centerline defining a longitudinal direction and alateral centerline defining a lateral direction, said holder comprising:

-   -   a) a front region;    -   b) a crotch region attached to the front region, said crotch        region having a Crotch Holding Force (CHF-4.0) of greater than        about 0.1 kgf and a Crotch Holding Force (CHF-2.0) of less than        about 1.0 kgf;    -   c) a rear region attached to the front and crotch regions and        cooperating with the front region to provide an adjustable        waistband; and    -   d) side elastics in the crotch region, said side elastics having        an Elastic Holding Force (EHF4.5) of less than about 1.0 kgf.

In another aspect, the invention relates to a thong-shaped holder forholding an article in close bodily contact in the pudendal region, saidholder having a longitudinal centerline defining a longitudinaldirection and a lateral centerline defining a lateral direction, saidholder comprising:

-   -   a) a front region;    -   b) a crotch region attached to the front region, said crotch        region having a Crotch Holding Force (CHF-4.0) of greater than        about 0.1 kgf and a Crotch Holding Force (CHF-5.5) of less than        about 1.0 kgf;    -   c) a rear region attached to the front and crotch regions and        cooperating with the front region to provide an adjustable        waistband; and    -   d) side elastics in the crotch region, said side elastics having        an Elastic Holding Force (EHF-4.5) of less than about 1.0 kgf.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a front view of a thong-shaped holder of the invention.

FIG. 2 is a rear view of the holder shown in FIG. 1.

FIG. 3 is a plan view of the holder of FIG. 1 that has been opened atthe sides, with the elastic components pulled flat, and furthercomprising an extension or panel on one side of the holder.

FIG. 4 is a plan view of another holder of the invention that has beenopened at the sides, with the elastic components pulled flat.

FIG. 5 is a plan view of a sanitary pad suitable for use with a holderof the invention.

FIG. 6 is a plan view of another sanitary pad suitable for use with aholder herein.

FIG. 7 is a perspective view of another sanitary pad suitable for usewith a holder herein.

FIG. 8 is a top plan view of the pad of FIG. 7, further comprisingwings.

FIG. 9 is a front view of the pad of FIG. 5 further comprising fasteningsystems and worn with the thong-shaped holder of FIG. 1.

FIG. 10 is a plan view of the pad of FIG. 6 further comprising alongitudinal medial hump.

FIG. 11 is a sectional view of the pad of FIG. 10 taken along line11-11.

FIG. 12 is a plan view of the pad of FIG. 6 further comprising alongitudinal tube of absorbent material.

FIG. 13 is a sectional view of the pad of FIG. 12 taken along line13-13.

FIG. 14 is a perspective plan view of an interlabial device suitable foruse with a holder of the invention.

FIG. 15 is a perspective view of another interlabial device suitable foruse with a holder herein.

FIG. 16 is a plan view of an absorbent article fluid management devicesuitable for use with a holder herein.

FIG. 17 is a sectional view of the device of FIG. 16 taken along line17-17.

FIG. 18 is a plan view of an absorbent article designed to be applieddirectly to the user's body that is suitable for use with a holderherein.

FIG. 19 is a sectional view of the article of FIG. 18 taken along line19-19.

FIG. 20 is a plan view of another pad for use with a holder herein.

FIG. 21 is a plan view of the pad of FIG. 5 further comprising regionshaving compositions disposed thereon that are transferable to thewearer's skin.

FIG. 22 is a plan view of the pad of FIG. 5 further comprising sensorsoperatively connected to the pad.

FIG. 23 is a plan view of the pad of FIG. 6 further comprising a pair ofside shields.

FIG. 24 is a sectional view of the pad of FIG. 23 taken along line24-24.

DETAILED DESCRIPTION OF THE INVENTION

The thong-shaped holder of the invention is suitable for holding acompatible article, typically an absorbent article, in close bodilycontact in the pudendal region of the wearer. In one embodiment, theholder is intended for use with menstrual articles such as sanitarypads, interlabial devices, pantiliners, and the like. In anotherembodiment, the holder is intended for use with urinary incontinencearticles, such as pads, diaper inserts, and the like. In still anotherembodiment, the holder is intended for use with a disposable fluidmanagement device comprising a bag, such as a menstrual or urine fluidmanagement device. The holder may also be used with an articlecomprising a lotion coating, a skin care composition, or a therapeuticcomposition that is partially transferable to the wearer's skin, or asensor operatively connected to the article. The absorbent or otherarticle herein typically has a compatible shape and size so that it fitswithin the low-motion zone of the wearer and avoids significant legmovement interactions that can interfere with close bodily contact inthe pudendal region.

While not intending to be limited by theory, it is believed that theholder provides an upward holding force against the article in thecrotch region to hold the article in close bodily contact when theholder is worn. The thong shape of the holder keeps the article in thelow-motion zone between the legs of the wearer and avoids significantleg movement interactions often encountered with conventionalbrief-style undergarments and conventional pads. The thong-shaped holderthus holds the article in close bodily contact throughout a range ofwearer motions, often providing improved performance (e.g., less leakagefrom the absorbent article and/or less soiling of clothing).Additionally, when the holder and article are designed and coordinatedto work together, the resulting system can be optimized to provideconsumer benefits such as leakage prevention, wearing comfort,stay-in-place performance, correct placement, discreetness, and/or costeffectiveness.

The invention also relates to a system comprising the thong-shapedholder and a compatible article, and a method for holding such anarticle in close bodily contact in the pudendal region by wearing theholder. The article typically is an absorbent article comprising aliquid pervious side, a liquid impervious side opposite the liquidpervious side, and an absorbent component between the liquid perviousside and the liquid impervious side. The liquid pervious side and theliquid impervious side of the article are arranged to form a unitarystructure. The article has a compatible size and shape, and is capableof being held in close bodily contact in the pudendal region by theholder. Compatible absorbent articles include sanitary and incontinentpads, interlabial inserts, pantiliners, and fluid collection bags andother devices. Typically, the article and the holder are designed andcoordinated to work together and provide improved performance, comfortand/or fit of the article.

The system of the invention comprises at least one article incombination with the thong-shaped holder. The article/holder system canbe used with or without the wearer's normal underwear or panty. Foradditional protection against leakage of bodily fluids, the wearer mayuse the absorbent article/holder system of this invention in combinationwith at least one additional absorbent article, such as a conventionalsanitary pad or pantiliner worn in the wearer's normal underwear, atampon, an interlabial pad, or a disposable fluid management devicecomprising a bag. The article and holder of this system may be packagedin a common, bundled, coordinated, or associated package or packages,and may be sold as a kit, for example a feminine hygiene kit.

As used herein, the term “absorbent article” refers to articles that areplaced against or in proximity to the body in the wearer'spudendal/perineum region to acquire, absorb, and contain the variousexudates discharged from the body. The term “absorbent article” isintended to include sanitary pads, pantiliners, interlabial devices,incontinence pads, fluid collection bags and other devices, and otherarticles worn in the crotch region.

The term “sanitary pad” refers to an article worn adjacent to thepudendal region that is intended to absorb and contain the variousexudates that are discharged from the body (e.g., blood, menses, andurine).

The term “disposable” refers to structures that are intended to bediscarded after a single use or a few uses (i.e., they are not intendedto be cleaned, laundered or otherwise restored and/or reused after use).Such structures may be recycled, composted or otherwise disposed of inan environmentally compatible manner. While the articles describedherein are typically disposable, they may be designed to be cleaned,laundered, restored and/or reused many times.

The term “pudendal region” refers to the external genitalia region,especially for a female, including the labia majora, the labia minora,the clitoris and the vaginal vestibule.

The term “perineum” refers to the external region of the body betweenthe anus and the pudendal region.

The term “vaginal introitus” refers to the entrance or opening to thevagina

The term “gluteal groove” refers to the crevice between the buttocks(gluteus maximi) extending upwardly from the perineum.

The terms “fluid”, “liquid” and the like are intended to beinterchangeable and refer to materials that are in a liquid state at atemperature of about 38° C.

As noted above, the invention provides a holder that holds an article,particularly an absorbent article, against a wearer's body in thepudendal region. With a conventional undergarment, the crotch regiontypically does not hold and maintain the article in close bodilycontact. For example, the article may sag when the wearer's legs arebrought together. Even conventional thong undergarments typically justcover the pudendal region and do not provide sufficient upward holdingforce to hold and maintain an absorbent article in close contact withthe body. On the other hand, the holder of the invention holds thearticle substantially against the pudendal region, i.e., in thelow-motion zone where there is little or no interference caused by legmovements. The holder typically maintains the upward force against thearticle throughout a range of body motions so that the article is heldin close bodily contact. The close bodily contact and the reduction inrelative motion between the article and the pudendal region generallyresult in improved performance (e.g., less leakage and/or less soilingof clothing). Moreover, the holder is comfortable to wearnotwithstanding the close conformity of the holder and article to thewearer's body. It is believed that the sufficient and comfortable upwardholding force provided by the crotch region of the holder against thearticle is due at least in part to the force exerted radially andaxially by the stretch material used. The crotch region can becharacterized as having a relatively low Crotch Holding Force value at agiven extension distance, when measured as described herein. Incontrast, conventional undergarments have often attempted to conform anabsorbent article to the pudendal area by using stretch materials ofrelatively high stretch modulus, often configured as elasticized liftingmembers (e.g., cinches) or by a very tight overall fit with highcontractive forces, such as seen with Japanese menstrual shorts.Undergarments of these types generally have high holding force values ata given extension distance, and are often described as uncomfortable.

While the present invention encompasses a wide variety of holder designsand compatible articles, it will often be described in terms of athong-shaped holder comprising a material of relatively high stretch andlow stretch modulus, used in conjunction with an absorbent article suchas a sanitary pad. FIGS. 1 and 2 show front and rear views of such aholder of the invention. The holder comprises a front region 30, acrotch region 50 attached to the front region, and a rear region 40attached to the front and crotch regions. The front and rear regionscooperate to provide an adjustable waistband, such as elasticizedwaistband 22. The holder is thus provided with a waist opening 21 thatallows entry into the holder. The front, crotch and rear regionscooperate to provide a pair of leg openings 60. The crotch regionextends between the front region and the rear region and to sideelastics 62 attached to the leg openings. In one embodiment, the front,rear, and crotch regions are elastic in the lateral and longitudinaldirections.

FIG. 3 shows the holder 20 in a full flat out position wherein each ofthe sides 32 and 34 has been opened and elastic components have beenpulled flat. FIG. 3 can also be considered to be a plan view of theholder. The holder has a longitudinal centerline L and a lateralcenterline T. The term “longitudinal” refers to a line, axis ordirection in the plane of the holder that is generally aligned with(e.g., approximately parallel to) a vertical plane that bisects astanding wearer into left and right body halves when the holder is worm.The term “lateral” refers to a line, axis or direction that lies withinthe plane of the holder that is generally perpendicular to thelongitudinal direction. The holder typically is symmetric about thelongitudinal centerline L and asymmetric about the lateral centerline T.

The holder 20 can comprise woven, nonwoven (with stretch incorporated asknown in the art) or knit fabrics, but typically comprises a knitfabric. Other materials having the requisite mechanical properties arealso suitable. The holder may be durable or disposable, but typically isdisposed of after a period of time (e.g., about 3 to 9 months) when itbegins to lose elasticity or otherwise shows wear. When the holder is aknit fabric, the mechanical properties of the various components can beprovided by a combination of the knit pattern used for a particularcomponent and the yarns that are used. In one embodiment, the stretchproperties of the crotch region of the holder are derived from circularknit materials known in the art. In one embodiment, the front region,the crotch region, and the rear region are wholly knit. The holdertypically comprises material having a basis weight greater than that ofhosiery and less than conventional undergarments in order to provide adesired “sheerness”. This low basis weight and sheerness facilitates theholder being worn comfortably under normal underwear, or in place ofnormal underwear.

As shown in FIGS. 1 and 2, the front region 30 is that portion of holder20 that cooperates with the rear region 40 to encircle a wearer's waistand hips. The front region cooperates with the rear region to define awaist opening 21 that allows entry into the holder, and to provide anadjustable waistband such that the waist opening conforms to a wearer'swaist. The adjustable waistband may be an adjustable string, tie orbelt, but typically is an elasticized waistband, such as elasticizedwaistband 22. The elasticized waistband may be formed by providing anelastic member, such as Lycra® or spandex material, adjacent each distalend of the blank shown in FIG. 3. The elasticized waistband typicallycomprises the same yarn as, and is integrally knit with, the frontregion and the rear region. More typically, the elasticized waistbandcomprises a turned welt as known in the art. One knitting pattern forthe elasticized waistband comprises a combination of plain knit stitchesand float stitches wherein every fourth wale is provided with a positivefloat stitch. The front, rear, and crotch regions also cooperate todefine the leg openings 60, as shown in FIG. 1.

The front region 30 can be cut to an appropriate shape from a woven ornonwoven material and joined to the remaining portions of the holder 20,but is typically wholly plain knit, more typically jersey knit, from acombination of elastically extensible and non-elastically extensibleyarns. The elastic properties of the individual yarns and the particularknitting pattern can be used to define the mechanical properties of thefront region. In one embodiment, the front region comprises wholly plainknit, e.g., jersey knit, using Lycra® or spandex yarn having suitablemechanical properties in all courses. Other knitting patterns andalternative yarns can be used to provide the desired mechanicalproperties.

While the front region 30 need not comprise elastic material, it istypically extensible in both the longitudinal and lateral directions.Such elastic extensibility enables the holder 20 to fit a variety ofbodily shapes and sizes and provides good conformity to a wearer's body.An extensible front region further cooperates with the rear region 40and the crotch region 50 to provide an upward holding force within thecrotch region of the holder throughout a wide range of wearer movements.The upward holding force helps maintain an article, such as sanitary pad200 shown in FIG. 5, worn with the holder in close bodily contact in thewearer's pudendal region. The upward force directs the sanitary pad 200such that it is held closely against the wearer's body, wherein thefront edge 202 of the pad lies in a position anterior to the introitusand the rear edge 204 lies posterior to the introitus. The upward forcealso helps maintain the sanitary pad in position throughout a wide rangeof wearer motions.

The crotch region 50 is positioned along the longitudinal centerline Lof holder 20 between the front region 30 and the rear region 40. Thecrotch region cooperates with the front region and the rear region todefine the leg openings 60. The crotch region is that portion of theholder that supports the article, such as sanitary pad 200, and holds itin close bodily contact in the wearer's pudendal area. The crotch regionhas a generally trapezoidal shape. When measured in a flat andnon-extended state, the crotch region has a width measured 10.0 cm abovethe lateral centerline of from about 6.0 to about 15.0 cm, and a widthat the lateral centerline of from about 1.5 to about 10.0 cm. Typically,the crotch region has a width measured 10.0 cm above the lateralcenterline of from about 8.0 to about 12.0 cm, and a width at thelateral centerline of from about 2.5 to about 8.0 cm. In one embodiment,the crotch region has a width measured 10.0 cm above the lateralcenterline of from about 9.0 to about 11.0 cm, and a width at thelateral centerline of from about 4.0 to about 5.0 cm. When used with anabsorbent article in a system of the invention, the crotch region widthtypically is greater than or equal to the width of the primary absorbentcore.

The crotch region 50 cooperates with the front region 30 and the rearregion 40 so that the holder 20 as worn provides a comfortable butsufficient upward holding force against the article. Without being boundby theory, it is believed that the upward holding force provided by thecrotch region against the article is due at least in part to thecompressive holding force provided by the stretch material therein. Whenthe crotch region is stretched in use, the material exerts compressiveforces against the article so as to hold it closely against the wearer'spudendal area. This conformity is maintained over a wide range of bodymovement, e.g., close pad-to-body contact is maintained when a wearer'slegs are close together, spread apart, and/or moving front to backduring walking. The holding force is great enough to securely hold thearticle against the body, but not great enough to cause wearerdiscomfort or to push the article out of position, especially duringbody movement. The crotch material typically has relatively low stretchmodulus and provides relatively high “available stretch” as worn. Thishigh available stretch in both the lateral and longitudinal directions,combined with sufficient but relatively low holding force, helps tomaintain the article in close bodily contact across a range of bodysizes, article (e.g., pad) sizes, and body motions. The crotch region ofthe holder has a Crotch Holding Force (CHF-4.0) of greater than about0.1 kgf, typically greater than about 0.2 kgf, as measured by the CrotchHolding Force method presented herein. In one embodiment, the crotchregion has a Crotch Holding Force (CHF-5.5) of greater than about 0.2kgf, typically greater than about 0.3 kgf. The crotch region also has aCrotch Holding Force (CHF-2.0) of less than about 1.0 kgf, typicallyless than about 0.8 kgf, more typically less than about 0.6 kgf. In oneembodiment, the crotch region has a Crotch Holding Force (CHF-4.0) ofless than about 1.0 kgf, typically less than about 0.8 kgf, moretypically less than about 0.6 kgf. In another embodiment, the crotchregion has a Crotch Holding Force (CHF-5.5) of less than about 1.0 kgf,typically less than about 0.8 kgf. In yet another embodiment, the crotchregion has a Crotch Holding Force (CHF-6.5) of less than about 1.4 kgf,typically less than about 1.2 kgf.

The crotch region 50 can comprise any woven material, nonwoven material(with stretch incorporated as known in the art), knit material, or thelike that possesses the requisite physical properties. Similarly, thecrotch region can comprise one material or a combination of materials,stitching, and/or design patterns that collectively possess therequisite physical properties. The crotch region can be cut to anappropriate shape and size, and joined to the remaining portions of theholder. The crotch region is typically wholly plain knit, more typicallyjersey knit, from a combination of elastically extensible andnon-elastically extensible yarns. The elastic properties of theindividual yarns and the particular knitting pattern can be used todefine the mechanical properties of the crotch region. In oneembodiment, the crotch region comprises wholly plain knit, e.g., jerseyknit, using elastomeric fiber material such as Lycra® or spandex yarnhaving suitable mechanical properties in all courses. Other knittingpatterns and alternative yarns can be used to provide the desiredmechanical properties. Typically the crotch region comprises a knitmaterial having a Crotch Holding Force similar to that of the materialused to construct the front region 30 and/or the rear region 40. Moretypically, the crotch region is integrally knit with the front regionand/or the rear region using a plain knit pattern. Suitable yarnsinclude natural yarns, such as cotton yarns and wool yarns, andsynthetic yarns, such as nylon yarns, polyester yarns, acrylic yarns,and combinations thereof, e.g., nylon yarns and cotton yarns. Typically,elastomeric fiber material such as Lycra® or spandex yarns are used withthese natural and/or synthetic fibers to provide the desired stretchproperties.

The rear region of the holder cooperates with the front region toprovide an adjustable, e.g., an elasticized, waistband. The rear regiontypically has a width measured 5.0 cm above the lateral centerline offrom about 0.5 to about 5.0 cm, more typically from about 2.0 to about3.0 cm. This portion of the rear region typically fits in the glutealgrove and provides a “z-direction” biasing force in the perineum areawhen the holder is worn.

The rear region 40 cooperates with the front region 30 to encircle awearer's waist and hips. As shown in FIG. 2, the rear region in thethong-shaped holder typically does not cover a wearer's buttocks, andoften comprises a relatively narrow strap, band or string that extendsup the gluteal grove. In one embodiment, the width of the strap, band orstring is from about 0.5 cm to about 5.0 cm, measured 5.0 cm above thelateral centerline. The rear region typically widens above the buttocksin the region near the waistband, as with conventional thong-shapedundergarments.

As described above regarding the front region 30, the rear region 40 maycomprise a woven or nonwoven material, but typically comprises whollyplain knit, e.g., jersey knit, from a combination of elasticallyextensible and non-elastically extensible yarns. The elastic propertiesof the individual yarns and the particular knitting pattern can bechosen to define suitable mechanical properties. In one embodiment, therear region comprises wholly plain knit, such as jersey knit, usingLycra® or spandex yarn having suitable mechanical properties in allcourses. Other knitting patterns and alternative yarns can be used toprovide the desired mechanical properties.

While the rear region 40 need not comprise an elastic material, it istypically extensible in both the longitudinal and lateral directions,particularly in portions of the rear region above the gluteal grove.Such elastic extensibility enables the holder 20 to fit a variety ofbodily shapes and sizes and provides good conformity to a wearer's body.The extensible rear region further cooperates with the front and crotchregions to provide an upward holding force within the crotch regionthroughout a range of wearer movements. Such an upward force helpsmaintain an article (such as sanitary pad 200 shown in FIG. 5) worn withthe holder in close bodily contact in the wearer's pudendal region. Therear region typically comprises material having a Crotch Holding Forcein the range described above for the crotch region. The front, crotch,and rear regions are often comprised of the same material.

The front, crotch, and/or rear regions of the holder may comprise atleast one additional extension or panel extending beyond these regionsso long as it does not significantly interfere with the function of theholder. For example, the rear region may comprise one or more additionalextensions or panels extending partially or fully over the buttocks thatdo not significantly interfere with the function of the holder. FIG. 3illustrates the addition of an extension 66 to the front, crotch andrear regions of the holder 20. (The extension 66 is shown on only oneside of holder 20, but when present it typically would be on both sidesof the holder.) If such extensions are added, additional side elasticssuch as elastics 62 may be attached to the periphery of the extensions,or the side elastics may be omitted.

As can be seen in FIG. 1, the holder 20 of the invention is providedwith a pair of leg openings 60. The front region 30, the rear region 40,and the crotch region 50 cooperate to define the periphery of each legopening 60. This periphery typically is provided with side elastic 62for elasticization of the leg opening. The side elastics 62 providecontractive forces around the periphery of the leg opening 60contributing to the fit of the holder. The contractive forces should begreat enough to fit comfortably against the body and help hold thearticle, and particularly any wings on the article, in contact with thebody through the range of body motions. The contractive forces shouldnot be so great as to cause discomfort to a wearer or adversely affectthe holding properties of the crotch region. Typically, the sideelastics have a relatively low stretch modulus and provide relativelyhigh available stretch as worn. Such side elastics cooperate with thecrotch region to provide a sufficient, comfortable and relativelyuniform upward holding force against an article to hold it closelyagainst a wearer's pudendal area. Since the side elastics in the crotchregion of the holder typically fit in the wearer's low-motion zone andnot around the legs, and the side elastics typically have high availablestretch, leg movements do not significantly interfere with the closebody fit of the article.

In one embodiment, the side elastics in the crotch region of the holderhave an Elastic Holding Force (EHF-4.5) of less than about 1.0 kgf,typically less than about 0.8 kgf, more typically less than about 0.5kgf, as measured by the Elastic Holding Force method presented herein.In another embodiment, the side elastics have an Elastic Holding Force(EHF-5.5) of less than about 1.0 kgf, typically less than about 0.8 kgf.The side elastics often have an Elastic Holding Force (EHF-4.5) ofgreater than about 0.1 kgf, typically greater than about 0.2 kgf.

In one embodiment, the side elastics are substantially straight (e.g.,having a low degree of curvature) in the crotch region of the holder,such as shown in FIGS. 3 and 4. These substantially straight sideelastics facilitate the use of long wings to better hold the article,such as a sanitary pad, in place and cover more of the side elastics. Asknown in the art, long wings enhance the soiling prevention performanceprovided by a sanitary pad. With non-thong shaped undergarments (e.g.,briefs, bikinis, etc.), the relatively high curvature of the sideelastic limits the practical length of the wings and therefore reducesthe soiling prevention performance of the pad.

The side elastics 62 may be joined to the front region 30, the rearregion 40, and the crotch region 50 about the periphery of the legopening 60 using methods known in the art, e.g., using adhesive means orby mechanical means, such as stitching. The side elastics may be joinedto portions of the side edges 25, 26, 27 and 28 surrounding the legopenings (i.e., that form the periphery thereof). Alternately, the sideelastics may be integrally formed, for example, formed during theknitting process, using methods known in the art. For a knit holder, theside elastics are typically joined to the front region, the rear regionand the crotch region by stitching.

The crotch region 50 of the holder 20 can also be provided with indicia,e.g., “placement guides” or “position guides”, to help a weareroptimally position a compatible or coordinated article therein. Suchindicia can comprise markings along the longitudinal centerline L of theholder to help a wearer reliably position the article on the innersurface of the crotch region. Placement guides 64 shown in FIGS. 1, 3and 8 and placement guides 82 shown in FIG. 4 are examples of suchindicia. Alternatively, the indicia can comprise markings on the sideelastics 62 and 80 in the crotch region of the holder to help a wearerproperly position wings on the article.

FIG. 4 is a plan view of an alternative holder 70 of the invention shownin a full flat out position with each of the sides opened and elasticcomponents pulled flat. The holder has a longitudinal centerline L and alateral centerline T. The holder comprises a front region 72, a crotchregion 74 attached to the front region, and a rear region 76 attached tothe front region and the crotch region. The rear region extends up thegluteal grove of the wearer, and cooperates with the front region toprovide an adjustable waistband, such as elasticized waistband 78. Theholder is also provided with side elastics 80 along the periphery of thecrotch region to improve its fit. The holder further comprises placementguides 82 along its longitudinal centerline L to help the wearerposition an article such as a sanitary pad on the inner surface of thecrotch region of the holder. In one embodiment, the front, crotch andrear regions of the holder are comprised of the same material, such asthe knit spandex material described above. The waistband may comprisethe same or different material.

It will be appreciated that the holder herein may have otherconfigurations besides those shown and described. For example, the frontregion may comprise one or more additional straps, strings, panels, orcut-out areas between the crotch region and the adjustable waistband.Other holder styles, designs, and configurations, such as “bikini”,“briefs”, etc., that comprise the front, crotch, and rear regions hereinare within the scope of the present invention. As described above, theholder may comprise at least one extension or panel extending beyond thefront, crotch, and/or rear regions so long as it does not significantlyinterfere with the function of the holder.

The holder of the invention can be made by various methods known in theart. Typically, a blank for the holder is first knit in a tubular formusing means known to the art. For example, the front region 30, the rearregion 40, and the crotch region 50 of holder 20 can be integrally knit.Appropriate knit patterns as described above can be used. In oneembodiment, portions of the tubular knit blank are cut out to providethe leg openings 60 of holder 20. For example, a tubular blank can beflattened such that the interior faces thereof contact each other and apair of longitudinally oriented side edges are formed. Leg openingprecursors can then be formed by cutting matching portions having asemi-circular, semi-elliptical, or other desired shape from transverselyopposite side edges at regular intervals along the flattened blank.Holder blanks are then formed by transversely cutting the flattenedtubular blank in a predetermined repeat pattern wherein a firsttransverse cut is made across the material not removed when the legopening precursors are formed to create a crotch portion precursor, anda second transverse cut is made across the full width of the flattenedtubular blank forming the waist opening 21. The leg elastics 62 aredisposed about the periphery of each leg opening and joined thereto. Thetwo ends formed by the first transverse cut are joined by a singletransverse seam to complete the crotch region 50. The holder 20 is thenfinished by forming a turned welt elasticized waistband about theperiphery of the waist opening.

Alternatively, a tubular blank for the holder 20 can be slit walewiseand opened. Excess material that would otherwise fill the leg openings60 is removed to form a flat blank for the holder having a front endedge 23, a rear end edge 24, front side edges 25 and 26, and rear sideedges 27 and 28. The side elastics 62 are joined to the holder about theperiphery of the leg openings as discussed above. The blank for theholder is then folded about the lateral centerline T, and opposingportions of the side edges that lie between the leg opening and the endedges 23 and 24 are joined (e.g., by sewing the edges) to form seams atsides 32 and 34 completing the assembly of the holder. In oneembodiment, the portion of side edge 25 that lies between the end of theside elastic 62 in the front region and the end edge 23 is joined to theportion of side edge 27 that lies between the end of the side elastic inthe rear region and the end edge 24 to form a seam at side 32. Side edge26 is joined to side edge 28 in a similar manner to form a seam at side34.

The holder of the present invention can be used with a wide variety ofcompatible articles, particularly absorbent articles, including sanitarypads, pantiliners, interlabial inserts, urinary incontinence pads,diaper inserts, fluid collection bags and other devices, and the like,capable of being held in close bodily contact in the pudendal region ofthe wearer. Such an article has a compatible shape and size, andtypically fits within the low-motion zone of the wearer and avoidssignificant leg movement interactions that can interfere with closebodily contact in the pudendal region. The invention thus provides asystem comprising the thong-shaped holder herein and a compatiblearticle for use therewith. While not intending to be limited by theory,it is believed that the article/holder system provides improvedperformance because the holder maintains the article (e.g., a pad) inclose bodily contact in the pudendal region of the wearer, both thearticle and the holder fit within the low-motion zone of the body,and/or the article and holder are designed to work together in acoordinated manner.

FIG. 5 is a plan view of one such compatible absorbent article suitablefor use in the system of the present invention. In this embodiment, theabsorbent article is a thong-shaped sanitary pad designated 200. In oneembodiment, the absorbent article has an absorbent capacity of at leastabout 8 grams of fluid, typically at least about 20.0 grams of fluid,and more typically at least about 40.0 grams of fluid. In anotherembodiment, the article has a caliper of greater than about 5.0 mm,typically greater than about 7.0 mm, and more typically greater thanabout 10.0 mm. FIG. 6 is a plan view of another compatible absorbentarticle for use in the present system. In this embodiment, the absorbentarticle is an oval shaped sanitary pad designated 300. Other compatibleabsorbent articles for use herein are shown in FIGS. 7-24. Othercompatible articles are also described in U.S. Pat. No. 6,393,621,Redwine et al.; U.S. Pat. No. 6,582,411, Carstens, et al.; PCTApplication WO 99/25289; U.S. Pat. No. 5,354,400, Lavash, et al.; andU.S. Pat. Nos. 4,687,478 and 5,267,992, Van Tilburg; all incorporatedherein by reference.

An article herein has at least two surfaces, a liquid pervious side,i.e., a body-contacting surface or “body surface”, and a liquidimpervious side, i.e., a holder-contacting surface, opposite the liquidpervious side. The body surface is worn adjacent to the wearer's body.The holder surface is placed adjacent to the supporting holder when thearticle is worn. An absorbent article typically also comprises anabsorbent component, such as an absorbent core, between the liquidpervious side and the liquid impervious side. The liquid pervious andimpervious sides are arranged to form a unitary structure, with theabsorbent component therebetween. An absorbent article herein will bedescribed in detail with reference to the sanitary pad 200 shown in FIG.5.

The sanitary pad 200 has two centerlines, a longitudinal centerline anda lateral centerline. The term “longitudinal” refers to a line, axis ordirection in the plane of the pad that is generally aligned with (e.g.,approximately parallel to) a vertical plane that bisects a standingwearer into left and right body halves when the pad is worn. The term“lateral” refers to a line, axis or direction that lies within the planeof the pad that is generally perpendicular to the longitudinaldirection.

The sanitary pad 200 has two spaced apart side edges, and two spacedapart end edges (or “ends”), which together form the periphery of theabsorbent article. When worn, the front edge 202 of the pad lies in aposition anterior to the introitus and the rear edge 204 lies posteriorto the perineum. In the embodiment shown in FIG. 5, the pad has agenerally flat configuration. However, other suitable configurations,including cup-shaped configurations such as shown in FIG. 7 anddisclosed in U.S. Pat. No. 6,582,411, may be used.

The article and any absorbent core may have any suitable plan viewconfiguration, including, but are not limited to: thong-shaped; oval;race-track shaped; and shapes that have convexly-inward longitudinalside edges (e.g., hourglass shapes). In the embodiment shown in FIG. 5,the sanitary pad and its primary absorbent core have a thong-shapedconfiguration with straight side edges and convexly curved end edges.

An absorbent article typically has an absorbent capacity of at leastabout 20 grams of fluid. Other absorbent articles for use herein mayhave more or less absorbent capacity. Such articles can be designed tomeet different absorbency needs ranging from a pantiliner having anabsorbent capacity of less than about 5 grams of fluid to anincontinence pad having a capacity of more than about 60 grams of fluid.

The absorbent article typically comprises at least three primarycomponents: a liquid pervious topsheet, a liquid impervious backsheet,and an absorbent component such as an absorbent core positioned betweenthe topsheet and the backsheet. The liquid pervious topsheet, the liquidimpervious backsheet, and the absorbent component can comprise a numberof suitable materials provided that the absorbent article has theoverall characteristics described herein.

It should be understood that articles herein are not limited tostructures that have these three primary components. Articles can beprovided that only have one or two of these components, or haveadditional components. For example, an absorbent article need not have atopsheet if the body-contacting surface of the absorbent core issuitable for use as a topsheet. A liquid impervious component, such as aliquid impervious backsheet, could be joined to the other side of theabsorbent component. Alternatively, an absorbent article can comprise anabsorbent component that has a liquid pervious side and a liquidimpervious side. The liquid impervious side can be provided by treatingthe holder-contacting surface of the absorbent component to render itliquid impervious.

While the articles described herein and any component topsheet,absorbent core and backsheet materials are typically disposable, theymay be designed to be cleaned, laundered, restored, and/or reused afteruse. The article may thus comprise washable, reusable material.

Absorbent articles such as sanitary pads are often worn in aloose-fitting undergarment. Such pads are typically designed to be largeenough so that in the event of any shifting of the pad from its positionunder the vaginal introitus, it will still be able to intercept thewearer's bodily discharges. If an absorbent article with sufficientabsorbent capacity is held closely against the wearer's pudendal region,and in particular covers the vaginal introitus, the surfaces of thelabia majora, and the perineum, the article can be of a reduced size.Such an absorbent article need only be large enough to cover theseregions of the wearer's body, rather than being sized to accommodateshifting of the article with respect to the introitus. The article andholder herein typically function by capturing body fluids at or neartheir source, using comfortable forces to hold the article in place atthe source of the body fluids.

The sanitary pad 200 typically is capable of maintaining contact with atleast a portion of the exterior surfaces of the wearer's labia, and atleast a portion of the crotch region of the holder 20. The pad typicallycovers an area of the wearer's body that is centered about the wearer'slabia and has a projected width of at least about 2.54 cm. The pad maycover substantially all of the exterior surfaces of the wearer's labia.The pad typically does not cover areas of the wearer's body that undergosubstantial degrees of movement (i.e., the pad is placed adjacent to thelow-motion zone of the wearer's body). In particular, the side edges ofthe pad typically do not have substantial contact with the insidesurfaces of the wearer's thighs when the wearer walks or otherwise movesabout. This overcomes a drawback of larger-sized sanitary pads thattypically transfer forces applied to their edges to other portions ofthe pad, causing it to bend, crumple, and/or shift from the desiredposition under the wearer's vaginal introitus.

The sanitary pad 200 can be made somewhat larger if the edge portionsthereof that may contact the inside surfaces of the wearer's thighs donot substantially transfer forces acting thereon to the remainder of thepad so as to cause it to bend, crumple, and/or shift from the desiredposition under the wearer's vaginal introitus. For example, an absorbentarticle can be constructed to have the desired target absorbent regiondescribed herein (e.g., covering the pudendal region and the perineum),with one or more additional regions located outboard of the targetabsorbent region that are suitably flexible and merely serve a “dropcloth” function with minimal or no absorbency. Such additional regionscan be comprised of topsheet and backsheet materials, and possibly athin layer of absorbent material therebetween. Such regions can serve as“wings” when they extend laterally from the central absorbent componentand are folded around the side edges of the holder.

The liquid pervious side of the article herein is the body-contactingsurface of the article. The liquid pervious side typically comprises astandard nonwoven web. Suitable fibers useful for making such a nonwovenweb include polyolefin and polyester fibers. The nonwoven web typicallyhas a basis weight from about 20 to about 200 grams per square meter,e.g., from about 30 to about 100 grams per square meter.

In some embodiments, the liquid pervious side comprises a plurality ofelements extending outward from the body-contacting surface of theabsorbent article. If the body-contacting surface is considered to liewithin the X-Y plane, these elements will extend outward from this planein the Z-direction. These elements can form any suitable angle with thebody-contacting surface of the article. The elements can comprise anysuitable type of components, including, but not limited to, fibers.

In one embodiment, the liquid pervious topsheet comprises a high loftfibrous material. The term “high loft fibrous material” refers to a lowdensity, but relatively high caliper, fibrous material. The high loftfibrous material typically has a density of less than or equal to about0.01 g/cm³, and a caliper of greater than or equal to about 3.2 mm,typically between about 6.4 mm and about 13 mm. The high loft fibrousmaterial typically has a basis weight of less than or equal to about 142grams/m². The calipers and densities for such material are measuredunder INDA standard test method IST 720.1-92, which specifies measuringcaliper under a pressure of 350 Pa.

The high loft fibrous material often comprises of fine polymeric fibers,which typically have a denier per fiber of less than or equal to about6. The high loft fibrous topsheet material serves several functions. Itallows the article to achieve a “macro” fit that is capable of fittingvirtually all women, and a “micro” fit that adjusts to the particularbody contours (which may be in the form of rugosities) of individualwomen. Another advantage of the high loft topsheet is that it is verysoft and “cushiony”. The high loft topsheet also is advantageous becauseit has a low coefficient of friction against the wearer's body due tothe discrete contact of the individual fibers with the wearer's body.

In some embodiments, the high loft topsheet comprises a thermally bondedpolyester fibrous nonwoven material having a caliper of about 4 mm and abasis weight of about 50 grams/m². The fibers of this high loft topsheetmaterial are typically in a random orientation. One particular materialfor the high loft topsheet has a caliper of 4.1 mm and a density of0.0077 g/cm³. Another high loft topsheet material has a caliper of 5.8mm and a density of 0.0098 g/cm³ (after rebulking). If the high lofttopsheet material has one side that is relatively flat and one side thatis “fluffy”, the flat side is typically oriented toward the absorbentcore of the article.

In other embodiments, the liquid pervious topsheet may comprise anapertured film, such as an apertured, formed film. Suitable formed filmsare described in U.S. Pat. No. 3,929,135, Thompson; U.S. Pat. No.4,324,245, Mullane, et al.; U.S. Pat. No. 4,342,314, Radel, et al.; U.S.Pat. No. 4,463,045, Ahr, et al.; and U.S. Pat. No. 5,006,394, Baird; allincorporated herein by reference. One material for the topsheetcomprises a formed film described in one or more of the above patentsand marketed on sanitary pads by The Procter & Gamble Company as the“Dri-Weave”. The topsheet typically has a hydrophilic surfactantincorporated therein during manufacture. One apertured film suitable foruse as the topsheet is marketed on sanitary pads by The Procter & GambleCompany as “Cotton-Like Dri-Weave”. Additional web materials suitablefor use as the topsheet include apertured and non-apertured nonwovenmaterials, composite structures, and the like.

It is often assumed that leakage of menses from conventional sanitarypads occurs primarily as a result of the capacity of the absorbentarticle being exceeded. However, a substantial number of soilingaccidents occur as a result of menstrual fluid that does not even enterthe sanitary pad. Often these soiling accidents result from mensesflowing adjacent to the wearer's body, and which may flow in or close tothe wearer's pubic hair. By holding the surface of the sanitary pad inclose bodily contact, the pad intercepts menses flowing along thewearer's body and allows such exudates to be acquired into the absorbentcore. Topsheets may be designed to provide a capillary structure withineach fiber as well as between fibers that enhances the capture of bodilyfluids, such as menses, and directs such fluids into the sanitary pad.

The absorbent core may be manufactured in a wide variety of sizes andshapes (e.g., rectangular, thong-shaped, oval, hourglass, dog bone,asymmetric, etc.), and from a wide variety of absorbent materialscommonly used in sanitary pads and other absorbent articles. Theabsorbent core, however, should typically be adapted so that it has thecapacity specified herein. Examples of suitable absorbent materialsinclude comminuted wood pulp, generally referred to as airfelt; crepedcellulose wadding; meltblown polymers including coform; chemicallystiffened, modified or cross-linked cellulosic fibers; synthetic fiberssuch as crimped polyester fibers; peat moss; tissue including tissuewraps and tissue laminates; absorbent foams; absorbent sponges;superabsorbent polymers; absorbent gelling materials; cotton cloth; orany similar material or combinations of materials, or mixtures thereof.The configuration and construction of the absorbent core may also bevaried. For example, the absorbent core may have varying caliper zones,e.g., it may be profiled to be thicker in the center, or may comprisehydrophilic gradients, superabsorbent gradients, or lower density andlower average basis weight acquisition zones, or it may comprise one ormore layers or structures.

The backsheet of the article herein can be any suitable flexible, liquidimpervious material. Typically, the backsheet is a polyethylene filmhaving a thickness of from about 0.013 mm to about 0.05 mm. Suitablepolyethylene films are manufactured by Clopay Corporation under thedesignation P18-0401 and microflex 1401. The backsheet may be embossedand/or matte finished to provide a more cloth like appearance. Further,the backsheet may permit vapors to escape from the absorbent core (i.e.,it may be breathable) while still preventing exudates from passingthrough the backsheet. A suitable breathable backsheet materialcomprises an adhesively attached laminate of an apertured film havingtapered capillaries, such as that described in U.S. Pat. No. 3,929,135,Thompson, and a microporous film. A suitable microporous film issupplied by Exxon Chemical USA, and described in U.S. Pat. No.4,777,073, Sheth. The breathable backsheet is typically arranged so thatthe smaller openings of the tapered capillaries face the absorbent core.The microporous film is joined to the side of the apertured film havingthe larger openings to form the holder-contacting surface of theabsorbent article. In one embodiment, both the absorbent article and thecrotch region of the holder are vapor permeable.

Sanitary pads and other absorbent articles herein often comprise wingsor flaps that extend laterally from a central absorbent component andare folded around the edges of the holder in the crotch region. Thewings typically are provided with an attachment means (e.g., adhesive)for affixing the wings to the outside of the holder in the crotchregion. The wings cover the sides of the holder and minimize or preventexudate soiling of the holder in these covered areas. Typically, longerwings provide better side soiling protection. Because of thesubstantially straight side elastics in the crotch region of certainholders herein, the wing length of a coordinated pad can be maximized.The wings may also help stabilize the absorbent article and prevent itfrom shifting out of place, especially when the wings are affixed to theoutside of the holder. Therefore, longer wings are also desirable toimprove the stability and “stay-in-place” performance of the absorbentarticle. The stability of longer wings, combined with increased sidecoverage, further improves the soiling protection provided by the systemof this invention. In one embodiment, the absorbent article compriseswings having a length at least about 75%, typically at least about 80%,and more typically at least about 85% (e.g., at least about 90%) of thelength of the absorbent article. Suitable wings are described in U.S.Pat. Nos. 4,687,478 and 5,267,992, Van Tilburg, and in U.S. Pat. No.5,354,400, Lavash, et al., all incorporated herein by reference.

In another embodiment, the absorbent article comprises such long wingsand a primary absorbent core having a width less than or equal to thewidth of the crotch region of the holder. As used herein, the width ofthe absorbent core relative to the width of the crotch region of theholder is measured when the article is placed in the holder as it isintended to be worn. In one embodiment, the primary absorbent core has awidth at least about 5.0 mm less than the width of the crotch region ofthe holder along at least a portion of the absorbent article's length,typically along a majority of the absorbent article's length, and moretypically along substantially all of the absorbent article's length. Theprimary absorbent core typically has a width at least about 10.0 mmless, and more typically at least about 15.0 mm less (e.g., at leastabout 20.0 mm less), than the width of the crotch region of the holderalong at least a portion of the absorbent article's length, typicallyalong a majority of the absorbent article's length, and more typicallyalong substantially all of the absorbent article's length. Thecombination of long wings and such a wider crotch region than theprimary absorbent core often provides a barrier leg cuff configurationthat improves containment of body exudates by the side elastics in thecrotch region of the holder. In embodiments having thicker absorbentcores, more narrow absorbent cores and/or wider holder crotch regionscan be selected to improve containment by such barrier leg cuffconfigurations.

The topsheet, the backsheet, and the absorbent core may be assembled ina variety of configurations known in the art, including layered or“sandwich” configurations and wrapped or “tube” configurations. In oneembodiment, the sanitary pad 200 is assembled in a sandwich constructionin which the topsheet and the backsheet have length and width dimensionsgenerally larger than those of the absorbent core. The topsheet and thebacksheet extend beyond the edges of the absorbent core to form portionsof the periphery.

The topsheet may be joined to the body-contacting side of the absorbentcore. In other embodiments, the topsheet need not be joined to theabsorbent core to enhance the flexibility of the sanitary pad. The term“joined” encompasses configurations in which an element is directlysecured to another element by affixing the element directly to the otherelement; configurations in which the element is indirectly secured tothe other element by affixing the element to intermediate member(s)which in turn are affixed to the other element; and configurations inwhich one element is integral with another element, i.e., one element isessentially part of the other element. The backsheet need not be, andtypically is not, joined to the absorbent core to enhance theflexibility of the absorbent article. The portions of the topsheet andbacksheet that extend beyond the edges of the absorbent core to form theperiphery are typically joined to each other. If the topsheet is joinedto the absorbent core, it can be joined to the core in any suitablemanner known in the art. The topsheet may be joined to the core by auniform continuous layer of adhesive, a patterned layer of adhesive, oran array of separate lines, spirals, or spots of adhesive.

At least the liquid pervious side and the liquid impervious side of theabsorbent article are arranged to form a “unitary structure.” The term“unitary structure” refers to a construction in which the components arejoined together, or integrated together as a unit. The term includesconstructions such as those described above where the topsheet,absorbent core, and backsheet comprise separate components that arejoined together. It also covers constructions in which the liquidpervious side and liquid impervious side of the absorbent article do notcomprise a separate topsheet and/or backsheet. For example, in thelatter case, the liquid pervious side, the liquid impervious side, orboth, may comprise a surface of the absorbent core that has the desiredcharacteristics, rather than a separate component.

FIGS. 5-24 show various absorbent articles suitable for use withthong-shaped holders of the present invention. Sanitary pad 200 shown inFIG. 5 comprises front edge 202, rear edge 204, and adjoining side edgesthat together form the periphery of the pad. The pad also comprises atopsheet 206, a backsheet 208, and a primary absorbent core 210 that hasa generally trapezoidal shape, with substantially straight side edgesthat taper to a narrowed width near the rear edge 204. The primaryabsorbent core comprises the significant absorbent material for fluidacquisition and storage, and typically is located directly beneath thevaginal introitus as worn. In one embodiment, the primary absorbent core210 has a length of about 21.0 cm, a width near the front edge 202 ofthe pad of about 6.5 cm, and a width near the rear edge 204 of the padof about 2.2 cm. The primary absorbent core also typically has a widththat is less than the width of the crotch region of the holder that willbe used to hold the article. The pad thus has a size and shapecompatible with the holder so that it can be held in close bodilycontact in the pudendal region.

The pad 200 also comprises two side wings 212 that extend laterally fromthe central portion of the pad. The wings can be folded around the edgesof the holder in the crotch region to help stabilize the pad and preventit from shifting out of place. The wings typically have a fasteningsystem such as an adhesive or other attachment means to help secure themto the outer surface of the holder in the crotch region.

In the embodiment shown in FIG. 6, sanitary pad 300 comprises front edge302, rear edge 304, and adjoining side edges that together form theperiphery of the pad. The pad also comprises a topsheet 306, a backsheet308, and a primary absorbent core 310 that has a generally trapezoidalshape, with substantially straight side edges that taper to a narrowedwidth near the rear edge 304. In pad 300, the primary absorbent core 310has a length of about 21.0 cm, a width near the front edge 302 of thepad of about 6.5 cm, and a width near the rear edge 304 of the pad ofabout 2.2 cm. The primary absorbent core also typically has a width thatis less than the width of the crotch region of the holder. The pad thushas a size and shape compatible with the holder so that it can be heldin close bodily contact in the pudendal region.

The pad 300 also comprises two side wings 312 that extend laterally fromthe central portion of the pad. The wings can be folded around the edgesof the holder in the crotch region to help stabilize the pad and preventit from shifting out of place. The wings typically have a fasteningsystem such as an adhesive or other attachment means to help secure themto the outer surface of the holder in the crotch region. Wings 312 arelonger than wings 212 shown in FIG. 5, and give the pad 300 a generallyoval shape. Such long wings improve the stability of the pad and, sincethey cover more of the holder, better protect it and outer garments fromsoiling.

Another absorbent article useful herein is described in U.S. Pat. No.6,582,411, Carstens et al., incorporated herein by reference. In theembodiment shown in FIG. 7, the article is a sanitary pad 400 capable ofcupping the wearer's labia from the front of the labia to the back ofthe labia, although other configurations, including flat configurations,are possible. Pad 400 comprises front edge 402, rear edge 404, andadjoining side edges that together form the periphery of the article.The pad also comprises a topsheet 406, a backsheet 408, and a primaryabsorbent core 410 positioned between the topsheet and the backsheet.The absorbent component, such as absorbent core 410, typically is of asize and configuration to cover the wearer's pudendal region andperineum, and does not extend forward beyond the wearer's mons pubis orrearward to the wearer's anus. The pad is of a size to substantiallycover all of the exterior surfaces of the wearer's labia. The padtypically has a flexure resistance of less than or equal to 100 gramsand is capable of substantially maintaining sustained contact with andcovering at least a portion of the inside surfaces of the wearer'slabia, at least a portion of the exterior surfaces of the wearer'slabia, and at least a portion of the holder. The pad 400 typically has alength of less than or equal to about 18 cm, and a surface area of lessthan or equal to about 130 cm². The primary absorbent core alsotypically has a width that is less than the width of the crotch regionof the holder used to hold the pad.

In one embodiment, the pad 400 has an absorbent capacity of greater thanor equal to about 10 grams of fluid in an area measuring 5 cm by 13 cmthat will be centered under the vaginal orifice when the absorbentarticle is worn. In another embodiment, the pad has a capacity in saidarea of greater than or equal to about 20 grams of fluid. The ratio ofabsorbent capacity to surface area is often greater than or equal toabout 0.3 g/cm². The liquid pervious topsheet side 406 of pad 400 maycomprise a high loft fibrous material, and typically comprises aplurality of fiber elements extending outward from the body-contactingsurface of the topsheet, such as fibers 412 shown in FIG. 7. The pad mayfurther comprise a fastening system, such as mechanical fasteningmaterial 416, on the holder-contacting surface of the pad for engagingat least a portion of the holder. The pad may also comprise elasticmembers 414 wrapped around the side edges of the pad to form the desiredcup-shaped configuration and provide soft side edges that contact thewearer during use. The soiling-prevention performance of such a pad maybe enhanced with the addition of wings, particularly long wings (e.g.,wings having a length of at least about 75% of the length of the pad).FIG. 8 is a top plan view of the pad of FIG. 7 with the addition of longwings 438.

FIG. 9 is front view of the sanitary pad 200 of FIG. 5 furthercomprising fastening systems 214 and 216, and worn with the holder 20 ofFIG. 1. FIG. 9 thus illustrates a system of the present invention. Othersystems herein are obtaining by combining the articles of FIGS. 5-24 andother articles described herein with the various holders describedherein. In the embodiment of FIG. 9, fastening system 214 is added to atleast a portion of the liquid impervious side of the pad 200 to engageat least a portion of the body-contacting side of the crotch region ofholder 20. Fastening system 214 may comprise any suitable fasteningmaterial, including an adhesive material, a cohesive-adhesive material,a material having a high coefficient of friction, or a mechanicalfastening material. The wings 212 of pad 200 are shown folded around theedges of the holder in the crotch region and secured to the outer,garment-contacting side of the holder. In FIG. 9, the wings also have afastening system 216 added to at least a portion of their liquidimpervious side to engage at least a portion of the crotch region ofholder 20. Fastening system 216 may also comprise any suitable fasteningmaterial, including an adhesive material, a cohesive-adhesive material,a material having a high coefficient of friction, or a mechanicalfastening material. Although pad 200 in FIG. 9 comprises both fasteningsystems 214 and 216, these are optional and one or both may be omitted.As can be seen, the pad has a size and shape compatible with the holderso that it can be held in close bodily contact in the pudendal region ofthe wearer. The primary absorbent core of the article typically is of asize and configuration to cover the wearer's pudendal region andperineum, and is capable of being held in close bodily contact by theholder.

Currently, a woman typically selects an undergarment of particularstyle, size, and design for everyday use. Those undergarments are oftenused with conventional sanitary pads for feminine hygiene. Consequently,manufactures of conventional sanitary pads must design their pads foruse in thousands of different combinations of undergarmentcharacteristics, dimensions, and material properties (i.e., crotchwidth, material, curvature, size, etc.). Additionally, the crotchregions of conventional undergarments are typically not designed tomaintain pad-to-body contact. As a result, conventional undergarment/padsystems commonly used do not perform well for hygiene purposes. Becauseof the wide variation of undergarment products, many new absorbentarticles with technical merit do not perform well with conventionalundergarments and thus have not been utilized. The holders and systemsof the present invention overcome many of these problems, and oftenenhance the performance of such absorbent articles.

The absorbent article and holder can be designed to work together in acoordinated and superior manner. For example, several absorbent fiberand structure inventions for absorbent articles require closepad-to-body contact for efficacy. These inventions have not beenmeaningfully beneficial when incorporated in sanitary pads becauseconventional undergarments do not reliably maintain the pad in closebodily contact. The absorbent article/holder system of this inventioncan be designed to utilize such improved absorbent articles andcomponents because the holder reliably maintains the article in closebodily contact.

The absorbent article/holder system herein may also provide benefits inthe area of absorbent article fastening. Conventionalundergarment/absorbent pad systems typically expose the pad to highmotion areas of the crotch region (i.e., leg interaction). When legmovement pushes the pad, it tends to move relative to the undergarment'scrotch. To minimize this movement, pressure sensitive adhesives areutilized on the garment side of the pad to secure the pad to the crotch.The adhesive and covering “release paper” add cost to the pad andinconvenience to the user. There have been several fastening systeminventions that replace pressure sensitive adhesive and release paperwith non-adhesive fastening systems. However, these have not beenmeaningfully beneficial when incorporated in conventionalundergarment/pad systems because the pads are exposed to high motionareas of the crotch region. The coordinated pad/holder system of thepresent invention can utilize these non-adhesive fastening systems sincethe pad and holder fit in the low motion zone of the body. The padfastening surface and the holder crotch surface can also be coordinatedand optimized to provide improved fastening.

The article/holder system of this invention can also reliably hold newforms of absorbent articles close to the body. Such articles performbetter when held close to the fluid source and in close bodily contact.Several sanitary pads are said to provide close pad-to-body contact byattaching the pad directly to the skin and holding it in place by usingpad-to-body interaction. Alternatively, the pad can be held in placewith special body-adhesives. These pads perform even better when thepresent holder assists in holding the pads in close bodily contact, withor without special body-adhesives.

Compatible absorbent articles useful with the present holder aredescribed in U.S. Pat. Nos. 5,383,869, 5,575,786, 4,950,264, and5,009,653, Osborn III, incorporated herein by reference. In oneembodiment, the article is a sanitary pad that is thin, relativelyhighly flexible, and has a capacity great enough to handle medium tohigh menstrual flows. The pad typically comprises, from the body surfacedown, an apertured formed film or nonwoven topsheet, a wipe acquisitionsheet, a wet-laid tissue, a superabsorbent core, and a barrierbacksheet. The pad often has an absorbent capacity, as defined herein,of at least about 8.0 grams of fluid, typically at least about 20.0grams of fluid, and more typically at least about 40.0 grams of fluid.The pad typically has a caliper of less than about 5.0 mm, moretypically less than about 3.0 mm, for example, less than about 2.6 mm.The pad typically has a flexure resistance of less than about 400 grams,more typically less than about 300 grams, for example less than about250 grams. The performance of such a thin pad is enhanced when it isheld close to the fluid source and in close bodily contact by the holderof this invention.

Another compatible absorbent article useful herein is described in U.S.Pat. No. 6,440,111, Berba et al., incorporated herein by reference. Inone embodiment, the absorbent article is designed for collecting and/orabsorbing low volumes of menstrual and non-menstrual bodily fluids. Thearticle is particularly useful for everyday use for managing dailyperspiration, vaginal discharge, post intercourse drainage, and otherbodily fluids due to various conditions, such as infection. The articlemay comprise an absorbent-free, liquid permeable structure having afirst surface and a second surface opposite thereof, and a barrier layercovering at least a portion of the second surface. The article may besubstantially free of absorbent material, and will collect fluid withinthe interstitial spaces (pores) to prevent fluid from transferring tounwanted surfaces. The article may also comprise a liquid permeablecover, a barrier layer, and an absorbent core intermediate the cover andthe barrier layer. The article may have an absorbent capacity of about1.2 grams or less and a caliper of about 3.0 mm or less. In oneembodiment, the absorbent core may comprise about 0.7 grams or less ofabsorbent material. The absorbent material typically is substantiallyfree of superabsorbent polymers and absorbent gelling materials. Theperformance of such an article is enhanced when held close to the fluidsource and in close bodily contact by the holder herein.

In one embodiment, the absorbent article has an absorbent capacity ofless than about 10.0 grams of fluid, typically less than about 5.0 gramsof fluid, and more typically less than about 3.0 grams of fluid, e.g.,less than about 1.2 grams of fluid. The article may have a caliper ofless than about 5.0 mm, typically less than about 3.0 mm, and moretypically less than about 2.6 mm. The article may have a flexureresistance of less than about 250.0 grams, and typically less than about120.0 grams.

Another compatible absorbent article for use with the holder of thisinvention is described in U.S. Pat. No. 5,382,245, Thompson et al.,incorporated herein by reference. In one embodiment, the articlecomprises a special fluid transport layer having external capillarychannels that direct body fluids to a storage layer. The article has anabsorbent core that is positioned between the topsheet and thebacksheet. The core has an uppermost surface facing the topsheet and alowermost surface facing the backsheet. A transport layer having a lowerportion and an upper portion is positioned where the lower portion ofthe transport layer is below the uppermost surface of the core and isoriented substantially in the longitudinal direction. The upper portionof the transport layer extends at least to the uppermost surface of theabsorbent core toward the topsheet and contains elements orientedsubstantially in the z-direction. The transport layer extends above theuppermost surface of the absorbent core. The performance of an absorbentarticle with such a fluid transport layer having external capillarychannels is enhanced when the article is held close to the fluid sourceand in close bodily contact by the holder.

Another compatible absorbent article for use herein is described in U.S.Pat. No. 6,287,288, Osborn III et al., incorporated herein by reference.In one embodiment, the extensible absorbent article is capable ofextending in length (i.e., in the longitudinal direction) and/or width(i.e., in the transverse direction), and/or in other directions. Theabsorbent article is typically capable of extending up to about 150% ofits length or width under a force of 500 grams. The absorbent articlemay also be capable of extending beyond 150% of its original dimension.The performance of such an extensible article is enhanced when it isheld close to the fluid source and in close bodily contact by the holderof this invention.

In one embodiment, a sanitary pad comprises an extensible liquidpervious topsheet, an extensible liquid impervious backsheet, and anextensible absorbent core positioned between the topsheet and thebacksheet. The topsheet and backsheet are joined together around theperiphery of the pad. The pad also comprises a fastener for attachingthe pad to the crotch region of the holder. The fastener is capable ofpermitting at least portions of the pad to extend in the longitudinaldirection. In some embodiments, the pad is comprised of extensiblecomponents and inextensible components. For instance, the pad may havean extensible topsheet and backsheet and an inextensible absorbent corethat is slung between the extensible topsheet and backsheet. In onevariation, the pad may have an inextensible topsheet as well. The padmay have stretch attachment means for fastening to the holder. In oneembodiment, the pad has a center region that deflects upward when thepad is stretched. In another embodiment, the pad has a “pop-up” center.Other embodiments have regions of differential stretch that allow thepad to assume particular configurations during use.

As described above, the holder-contacting surface of the absorbentarticle typically comprises a fastening system for attaching the articleto the holder. The fastening system may comprise an adhesive material,including any of the pressure sensitive adhesives typically used tosecure conventional sanitary pads to the crotch region of undergarments.Alternatively, the absorbent article/holder system may comprisemechanical fastening material located on a portion of the liquidimpervious side of the article that will engage with at least a portionof the crotch region of the holder. The mechanical fastening materialcan be located on any suitable portion of the holder-contacting surfaceof the article. The mechanical fastening material can be distributed ina pattern that matches the pattern of one or more pre-selected portionsof the holder. The alignment of the mechanical fastening material withportions of the holder can be used as a placement guide to ensure thatthe article is positioned properly in the holder. The pattern ofmechanical fastening material can also be used to assist in fitting thearticle closely against the wearer's body. If the article compriseswings, at least a portion of the wings may comprise mechanical fasteningmaterial for engaging at least a portion of the crotch region of theholder. For example, pad 200 shown in FIG. 9 comprises fastening systems216 located on the liquid impervious side of wings 212. Fasteningsystems 216 may comprise mechanical fastening material for engaging atleast a portion of the crotch region of holder 20.

The sanitary pad 200 is typically utilized by placing it in the crotchregion of the holder 20, with one end extending toward the front regionof the holder and the other end towards the back region of the holder.The backsheet of the pad is placed in contact with the inner surface ofthe center of the crotch region of the holder. Fastening systems 214,shown in FIG. 9 on the holder-contacting side of the sanitary pad, maycomprise projections of mechanical fastening material for engaging withthe knit material from which the crotch region of the holder istypically made. The wearer then pulls on the holder, which stretches andfits the wearer.

In one embodiment, the holder-contacting surface of the absorbentarticle comprises a skin-friendly mechanical fastening material having asubstrate or surface with an array of prongs in the form of a pluralityof small hair-like projections disposed thereon, such as described inU.S. Pat. No. 6,582,411, Carstens, et al., incorporated herein byreference. For example, sanitary pad 400 shown in FIG. 7 comprisesmechanical fastening material 416 on its holder-contacting surface. Suchprojections are capable of easily adhering to knit material (e.g., thecrotch region of the holder), and have sufficient holding force evenwhen the holder stretches and contracts.

Cohesive-adhesive fastening systems, such as described in U.S. Pat. No.5,415,650, Sigl, et al., incorporated herein by reference, are alsosuitable for use herein. The absorbent article is positioned on and heldsecure to the crotch region of the holder by cohering a firstcohesive-adhesive with the second cohesive-adhesive. For example, inFIG. 9, each of fastening systems 214 may comprise a) a firstcohesive-adhesive at least partially impregnated or coated onto at leasta portion of the liquid impervious side of the article, and b) a secondcohesive-adhesive at least partially impregnated or coated on at least aportion of the crotch region of the holder. As used herein, a“cohesive-adhesive” material is one that preferentially adheres toitself and not to other materials. If the absorbent article compriseswings, the liquid impervious side of each wing and an exterior surfaceof the crotch region of the holder may be covered with a first and asecond cohesive-adhesive, respectively, such that a firstcohesive-adhesive present on the wings can cohere to a secondcohesive-adhesive present on the exterior surface of the crotch region.For example, fastening systems 216 shown in FIG. 9 may comprise a firstcohesive-adhesive on the liquid impervious side of the wings 212 forengaging a second cohesive-adhesive on the garment-contacting side ofthe crotch region of the holder. The holding force provided by thecrotch region combined with the fit within the low motion zone enhancesthe absorbent article stay-in-place performance of cohesive-adhesivefastening systems relative to that of conventional pad/pant systems.

The absorbent article/holder system of this invention need not compriseany fastening adhesive or fastening material in order to hold thearticle in place. In one embodiment, the holding force provided by thecrotch region of the holder combined with the frictional forces betweenthe article and the holder are sufficient to hold the article in place,especially given the lack of relative motion in the low-motion fit zoneof the body. Similarly, an absorbent article with wings need notcomprise an adhesive or other fastening material on the wings to helpkeep them in place.

Another fastening system for use herein is described in U.S. Pat. No.6,613,175, Moscherosch et al., incorporated herein by reference. In oneembodiment, the absorbent article has a low auto-adhesion attachmentmeans for maintaining the article's position in use. The article iscapable of being folded upon itself prior to use, and then unfoldedwithout destroying any aspect thereof. This eliminates the need for aseparate release sheet to protect any positioning adhesive prior to use.This embodiment may reduce non-value-added costs, enhance consumerconvenience by reducing the number of steps of use, enhance consumerdiscretion by eliminating release sheet handling issues such as noiseand disposal, and reduce environmental concerns by eliminating a portionof the product from the solid waste stream. The holding force providedby the crotch region of the holder combined with the improved fit withinthe low motion zone enhances the stay-in-place performance of such lowauto-adhesive fastening systems.

Another fastening system for use herein is described in U.S. Pat. No.6,595,977, Luizzi, et al., incorporated herein by reference. Theabsorbent article comprises a high coefficient of friction (COF) surfaceon the liquid impervious side (e.g., backsheet) of the article to helpmaintain its in-use position. The holding force provided by the crotchregion of the holder combined with frictional forces between such a highCOF backsheet surface and the holder are sufficient to hold the articlein place, especially given the lack of relative motion within thelow-motion zone of the body. For example, in FIG. 9, each of fasteningsystems 214 may comprise a high COF surface on the backsheet 208 of thepad.

Another fastening system for use herein is described in U.S. Pat. No.5,676,652, Hunter, et al., incorporated herein by reference. In oneembodiment, the article has a pair of wings that are provided withmechanical fasteners. The wings extend laterally from a centralabsorbent component and are folded around the edges of the holder toprovide coverage and reduce side soiling. The wings typically stay inplace well enough to cover the side edges of the holder without affixingthem underneath the holder. However, the wings may be provided with askin-friendly mechanical fastening material for additional security.

The performance of such wings with mechanical fasteners may be enhancedby the absorbent article/holder system of this invention relative toconventional pad/panty systems because of one or more of the followingreasons. First, the holding force provided by the crotch region of theholder combined with frictional forces between the article and theholder provides superior stay-in-place performance, especially given thelack of relative motion within the low-motion zone fit herein. Second,side elastics on the holder typically are substantially straight in thecrotch region compared to the majority of conventional panties that havea high degree of curvature, which reduces the wings' propensity to staywrapped. Such straight side elastics improve the wings' propensity tostay wrapped, thereby reducing the need for wing fastening strength. Andthird, since the article and holder are coordinated, the material in thecrotch region on the garment-contacting side of the holder can beoptimized to work effectively with the wings' mechanical fastener.

The absorbent article/holder system of this invention also can be usedwith forms of wings that automatically cover the edges of the holder(i.e., “auto-wrap” wings) without requiring action by the wearer to foldthe wings, as required with conventional wings. Such “auto-wrap” wingsare described in U.S. Pat. Nos. 5,584,829 and 5,354,400, Lavash, et al.,incorporated herein by reference. The performance of such wings may beenhanced by the present holder and system because of one or more of thefollowing reasons. First, the low motion zone fit provided helpsmaintain pad and wing “stay-in-place” performance, even with a highdegree of body motion. Second, substantially straight side elasticsherein help maintain “stay-in-place” performance of the wings, evenwithout wing fastening means. Third, the coordinated nature of thissystem allows the wings to be designed in concert with the holder tomaintain optimal performance.

In one embodiment, a sanitary pad has a wing that provides coverage toreduce side soiling without the use of conventional wings. The wing isjoined to the main body portion of the pad and is wider than the crotchregion of the holder. The wing has a pair of short, flexible (and insome embodiments, drapable) longitudinal side portions that extendbeyond the crotch edge portions of the holder. The side wrappingelements have a high fold retention. The wing comprises at least someextensible portions that are provided with low or no return force (forcethat tends to cause the extensible portions to retract after they havebeen extended). The fact that the extensible portions are provided withlow or no return force and the side wrapping elements have a high foldretention allows the side wrapping elements of the wing to automaticallyfold around the crotch edge portions of the holder toward the undersideof the holder and to remain folded when the pad is placed in the holderand the holder is pulled up adjacent the wearer's body.

In another embodiment, an absorbent article such as a sanitary pad mayhave a region, typically centrally located, that is thicker and/orstiffer than portions that lie outboard of this center region. The padmay have a central low motion area that has a greater thickness and/orless flexibility than regions of the pad that may contact the insides ofthe wearer's thighs and experience more motion. The pad may have anadditional raised portion on its body-contacting side. The raisedportion is typically centered relative to the longitudinal centerline ofthe pad. The raised portion may extend any desired portion of the lengthof the pad, up to its full length. The raised portion can be formed by avariety of different types of structures. In some embodiments, theraised portion can comprise a tube of absorbent material that is joinedto the liquid pervious side of the pad to form a compound absorbentarticle. In other embodiments, the raised portion can comprise ahump-forming element that may underlie the liquid pervious topsheet.Examples of absorbent articles having a raised portion on theirbody-contacting side are described in U.S. Pat. No. 6,582,411, Carstenset al., incorporated herein by reference.

Other absorbent articles having raised portions on their body-contactingside are described in U.S. Pat. No. 6,171,291, Osborn, III, et al.; U.S.Pat. No. 6,740,069, Drevik; and U.S. Pat. No. 6,316,688, Hammons, etal.; incorporated herein by reference. These articles maintainpad-to-body contact in conventional pad/panty systems by filling the gapbetween the body and pad surface with “humps” and “tubes” of absorbentmaterial. When conventional sanitary pads are used with the wide varietyof available conventional panties, the panty crotch frequently sags andthe body-contacting pad surface separates from the body (i.e.,pad-to-body contact is lost). When this gapping occurs, the pad does notabsorb the body's exudates as effectively as when it maintainspad-to-body contact. Stuffing or filling these gaps with humps or tubesis one approach to maintain pad-to-body contact. However, such humps andtubes also frequently separate from the body, reducing theireffectiveness.

The performance of absorbent articles comprising humps and/or tubes isenhanced by the article/holder system of this invention relative toconventional pad/panty systems because of one or more of the followingreasons. First, the holding force provided by the crotch region of theholder effectively provides and maintains pad-to-body contact. Second,the low motion zone fit of this invention helps maintain pad-to-bodycontact, even with a high degree of body motion. Third, the coordinatednature of the system allows the absorbent hump or tube to be designed inconcert with the holder to optimally position it against the body. Thisoptimal positioning, combined with maintenance of pad-to-body contact,further improves absorbency performance versus conventional pad/pantysystems.

In one embodiment, such as described in U.S. Pat. No. 6,171,291, OsbornIII, et al., the absorbent article is provided with a longitudinalmedial absorbent hump in the longitudinal central region on thebody-contacting side of the article. The hump provides additionalabsorbent capacity and liquid acquisition capability in the targetregion of the article. The hump also typically maintains the article inclose physical contact with the wearer's body. The article comprises aprincipal longitudinal centerline, a principal transverse centerline, abody surface, and a holder surface. A longitudinal central region isdisposed along the length of at least a portion of the principallongitudinal centerline. The article has surrounding regions such aslongitudinal side regions disposed at least laterally outboard of thelongitudinal central region. The article comprises a liquid pervioustopsheet, a liquid impervious backsheet joined to the topsheet, and anabsorbent core positioned between the topsheet and backsheet. Thelongitudinal medial hump has a caliper measured at its point of maximumamplitude of greater than about 3.0 mm, typically between about 4.0 mmand about 15.0 mm. The hump typically has a base width of between about0.5 cm and about 5.0 cm, and a length of between about 2.0 cm and about12.0 cm.

FIGS. 10 and 11 illustrate the addition of such a longitudinal medialhump 316 on the body-contacting side of the pad 300 of FIG. 6. The padcomprises a liquid pervious, body-contacting side such as topsheet 306,a liquid impervious side such as backsheet 308 opposite the liquidpervious side, and an absorbent component such as absorbent core 310between the liquid pervious side and the liquid impervious side. Atleast the liquid pervious side and the liquid impervious side of pad arearranged to form a unitary structure.

The hump 316 typically comprises a hump-forming element, such as humpcore 318, that provides additional absorbent capacity and liquidacquisition capability in the target region of the pad. The hump alsoprovides the sanitary pad with a centering/positioning mechanism. Thehump typically maintains the sanitary pad in close physical contact withthe wearer's body, particularly with the inwardly-contacting surfaces ofthe wearer's labia majora. The hump-forming element is typically acompressible and resilient material, and may comprise a material that isdifferent from that in the absorbent core. The compressibility allowsthe hump, or at least its top half, to narrow and fit comfortably in thespace between the wearer's labia. The resiliency allows the hump tobetter conform to the wearer's body and maintain such contact duringwear. The hump-forming element is typically both wet and dry resilient.This provides the hump-forming element with resistance to collapsingunder the conditions encountered during wear. The hump may comprise anabsorbent foam material or synthetic fibers selected from the groupconsisting polyester fibers, synthetic fibers having capillary channelson their exteriors, polypropylene fibers, orlon fibers, fibrousabsorbent gelling material, and mixtures thereof.

In another embodiment, such as described in U.S. Pat. No. 6,740,069,Drevik, the absorbent article has a substantially elongated shape with alongitudinal direction and a transverse direction with a hump extendingin the longitudinal direction and having two longitudinally extendingsides, and elastic members. The hump includes a formation element andthe elastic members are arranged along either longitudinally extendingside of the hump, wherein the formation element and the elastic memberscooperate in shaping the hump.

In one embodiment, such as described in U.S. Pat. No. 6,316,688,Hammons, et al., the absorbent article has a three dimensionally-shapedtube of absorbent material extending outward from the body-contactingside of the article and aligned along its longitudinal centerline. Thetube typically comprises an absorbent material and a cover at leastpartially wrapping the absorbent material. The tube typically comprisesabsorbent foam material or synthetic fibers selected from the groupconsisting polyester fibers, synthetic fibers having capillary channelson their exteriors, polypropylene fibers, orlon fibers, fibrousabsorbent gelling material, and mixtures thereof.

FIGS. 12 and 13 illustrate the addition of such a three-dimensionallyshaped tube 320 of absorbent material to the pad 300 of FIG. 6. The padcomprises a liquid pervious, body-contacting side such as topsheet 306,a liquid impervious side such as backsheet 308 opposite the liquidpervious side, and an absorbent component such as absorbent core 310between the liquid pervious side and the liquid impervious side. Theliquid pervious side and the liquid impervious side of pad 300 arearranged to form a unitary structure. The tube of absorbent materialextends outward from the body-contacting side of the pad and is alignedalong its longitudinal centerline. The tube comprises an absorbentmaterial such as tube core 324 and a cover such as tube topsheet 322 atleast partially wrapping the absorbent material.

Other absorbent articles useful herein include the interlabial insertdevices described in U.S. Pat. No. 6,416,501, Brown, et al.; U.S. Pat.No. 6,355,022, Osborn III, et al.; U.S. Pat. No. 5,895,381, Osborn III,et al.; U.S. Pat. No. 5,484,429, Vukos, et al.; incorporated herein byreference. These interlabial devices perform even better when the holderof this invention assists in holding them in close bodily contact, withor without special body-adhesives.

FIG. 15 illustrates an interlabial device 430 useful herein that is asmall pad-like structure comprising a liquid pervious side such astopsheet 432, a liquid impervious side such as backsheet 434 joined tothe topsheet, and an absorbent component such as absorbent core 436positioned between the topsheet and backsheet. The liquid pervious sideand the liquid impervious side are arranged to form a unitary structure.The length of the interlabial device typically is between about 60.0 mmand about 130.0 mm, and the width typically is between about 25.0 mm andabout 40.0 mm. The device often comprises an axis of bending A such thatwhen it is folded along the axis and inserted into the wearer'sinterlabial space, the liquid pervious topsheet side of the devicemaintains contact with the walls of the wearer's labia. Typically, theliquid pervious topsheet is constructed of rayon or needle punchedrayon. The absorbent component typically comprises rayon, cotton, asuperabsorbent polymer, or mixtures thereof. The device may alsocomprise a removal tab, such as removal tab 438, joined to the liquidimpervious side of the device to facilitate insertion and removal of thedevice with the fingers.

In another embodiment, such as described in U.S. Pat. No. 6,355,022,Osborn III, et al., the interlabial device has at least onebody-contacting surface, and comprises a non-adhesive substance havingno initial tack on the body-contacting surface, wherein the non-adhesivesubstance is capable of contacting the inside of the wearer's labia toassist the device staying in position within the interlabial space. Forexample, the interlabial device 430 shown in FIG. 15 comprises such anon-adhesive substance 442. The non-adhesive substance typically has noinitial tack so that it will not stick to the wrong portions of thewearer's body when the device is placed between the labia. Non-adhesivesubstances include moisture-activated substances that become viscous anddevelop a tack when contacted by relatively small amounts of moisture.

In this embodiment, the substance adheres the interlabial device to theinside surfaces of the labia minora, or alternatively to the labiamajora or both the labia minora and labia majora, so that it remainsadhered to these surfaces (on both sides of the interlabial space) whenthe wearer moves in a way that the labia spread (e.g., when the wearersquats). This allows the interlabial device to remain in place duringwearing conditions. The need for such a substance becomes more importantas the loading that the interlabial device is expected to hold (that is,the weight of absorbed bodily liquids) increases. Typically, theunloaded interlabial device will weigh less than or equal to about 5.0grams. As the weight of absorbed bodily liquids increases, the force ofgravity on the loaded interlabial device increases. This results in theneed for increased ability to hold the interlabial device in place,particularly when the exudate loading is greater than or equal to about8.0 grams.

Moisture-activated substances are particularly useful with theinterlabial device because they can make the device easier to apply.They are also particularly useful for sealing against this portion ofthe wearer's body since moisture is naturally present.Moisture-activated substances useful herein include polyethylene glycols(“PEGs”), sodium carboxymethylcellulose, cellulose gums, hydroxyethylcelluloses, hydroxypropyl celluloses, hydroxypropylmethyl celluloses,fanctionalized guars (such as cationic guar and hydroxypropyl guar),caffageenan, glycols (dihydric alcohols) such as propylene glycols,hexylene glycols, polyols which contain three or more hydroxyl groupssuch as glycerin, surfactants such as polyoxyl alkylates(polyoxyethylene sterates) ethoxylated alcohols, sugar surfactants,sugars (such as glucose, fructose, and sucrose), alone or in combinationwith pectin, guar gum, and other gums.

Another interlabial device suitable for use herein is described in U.S.Pat. No. 5,895,381, Osborn III, et al. FIG. 14 illustrates such a device420 comprising a liquid pervious side such as topsheet 424 and a liquidimpervious side such as backsheet 426 that are arranged to form aunitary structure. The device often comprises an axis of bending X suchthat when it is folded along the axis and inserted into the wearer'sinterlabial space, the liquid pervious topsheet side of the devicemaintains contact with the walls of the wearer's labia. The devicefurther comprises a pair of flexible extensions 428 joined to theabsorbent component 422 and extending downwardly and outwardlytherefrom, said flexible extensions being capable of contacting theinside surfaces of the wearer's labia when the device is worn. Theflexible extensions block a direct “line of sight” from the outerperimeter of the labia majora to the vaginal introitus so that the flowof body exudates will be interrupted by the absorbent interlabialdevice. The holder of this invention assists in holding this interlabialdevice in close bodily contact. The performance of the interlabialdevice is further enhanced when the flexible extensions extend beyondthe side elastics of the holder and serve as wings.

Another absorbent article useful herein may be referred to as a“pad-to-body” pad. Such articles are described in U.S. Pat. No.6,746,436, Sierri, et al., incorporated herein by reference. Forexample, the sanitary pad 470 shown in FIGS. 18 and 19 comprises aliquid pervious side such as topsheet 476, a liquid impervious side suchas backsheet 478 opposite the liquid pervious side, and an absorbentcomponent such as absorbent core 480 between the liquid pervious sideand the liquid impervious side. The liquid pervious side and the liquidimpervious side are arranged to form a unitary structure. The pad 470 isdesigned to be applied directly to the user's body, and may comprise afastening system such as skin-friendly adhesive 482 to adhere thearticle directly to the body. The absorbent article may be adapted toform a three dimensional shape before being applied directly to theuser's body.

Other absorbent articles useful herein are described in U.S. Pat. No.6,761,710, D'Acchioli, et al., U.S. Pat. No. 6,551,292 D'Acchioli, etal., and U.S. Pat. No. 6,508,794 Palumbo, et al., incorporated herein byreference. In one embodiment shown in FIGS. 16 and 17, the absorbentarticle is a disposable fluid management device 450, such as a menstrualfluid or a urine fluid management device, comprising a bag 452 having aflange 454 and an aperture 456. The bag typically comprises an adhesivelayer 460 having a first surface and a second surface opposed thereto,wherein first surface is disposed proximate to the aperture and on anexternal surface of the bag, and the second surface is capable ofproviding releasable attachment of the bag to the uro-genital area of awearer. The aperture typically is surrounded by an adhesively facedflange for releasable attachment to the uro-genital area of the wearer.These disposable fluid management devices are designed to acquire,absorb, and contain various exudates discharged from the body, includingurine and menses. The bags are typically liquid impermeable. Anabsorbent material 464 may be disposed within the bags. The absorbentmaterial may be selected from the group consisting of comminuted woodpulp; creped cellulose wadding; meltblown polymers; chemicallystiffened, modified or cross-linked cellulosic fibers; tissue; absorbentfoams; absorbent sponges; superabsorbent polymers; absorbent gellingmaterials; and mixtures thereof. The flange adhesive typically isselected from the group consisting of hydrogel adhesives, oilgeladhesives, hydrocolloid adhesives, and mixtures thereof.

Another article useful herein is the incontinence device described inU.S. Pat. No. 5,336,208, Rosenbluth, et al., incorporated herein byreference. The device is a urethral meatus occlusion device comprising aresilient body, configured to engage and seal against the urethralmeatus and to be retained in place by engagement with the externalfemale genitalia. In one embodiment, the body is a pad that includes abase having a substantially triangular or arrowhead-shaped outline thatis adapted to seat against the vestibule of the vulva, anteriorly of thevaginal orifice, thereby occluding the urethral meatus. The lateraledges of the pad are configured to fit inside the labia minora. Theengagement between the pad and the labia retains the pad against thevestibule in sealing engagement against the meatus. The articlecomprises a body of biocompatible material configured to fit between thelabia minora and the vestibule floor, said body having surface means toocclude the urethral meatus. The surface has a vestibulefloor-contacting surface on the body and an adhesive means on thevestibule floor-contacting surface for providing a sealing engagementbetween the body and the urethral meatus.

Other absorbent articles useful herein include the thong-shaped articlesdescribed in U.S. Pat. No. 6,632,210, Glasgow, et al.; U.S. Pat. No.6,613,031, Glasgow, et al.; U.S. Pat. No. 6,629,965, Drevik, et al.;U.S. Pat. No. 6,554,812, Drevik; all incorporated herein by reference.The holder assists holding these articles in close bodily contact, andthus provides improved performance. In one embodiment, such as describedin U.S. Pat. Nos. 6,632,210 and 6,613,031, the absorbent article is apad that achieves a dynamic body fit adjacent to the wearer's vagina.The pad is closely fit to the user's body by means comprising anintergluteal strip. FIG. 20 shows such a sanitary pad 500 comprises amain pad body having an absorbent component such as absorbent core 506positioned between a liquid pervious side such as topsheet 502 and aliquid impervious side such as backsheet 504, which are arranged to forma unitary structure. The absorbent core has a thong shape, and typicallyhas a width less than or equal to the width of the crotch region of theholder. The pad comprises a rear end which in use is located inproximity to a wearer's buttocks and an opposed front end, a first faceadapted to contact with the wearer's body and an opposing second faceadapted to face toward the holder, and a main pad body thickness beingdefined as the dimension of the main pad body from the first face to thesecond face. The main pad body is adapted to be worn in close proximityto the vagina.

The pad 500 further comprises one or more flexible front flaps 508extending forwardly from the front end of the pad and terminating at adistal end 510. The flaps are adapted to aid in retaining the articleadjacent to the wearer's vagina. The distal ends of the front flapscomprise an area 512 adapted for attaching the distal end to the holder.The area 512 may comprise a fastening system such as described above.The front flaps may be extensible and may comprise a body adhesive 520for attaching the front flaps to the wearer's body. The article furthercomprises a tail 514, which typically is relatively small in thicknesscompared to the absorbent article thickness. The tail extends rearwardlyfrom the rear end of the pad, terminating at a distal end. The tail isconfigured to be received between the buttocks of the wearer tofacilitate retaining the pad adjacent to the vagina. The tail may beextensible and may comprise an area 516 adapted to secure the tail tothe holder or to the wearer's body, such as by using a fastening systemas described above. In one embodiment, the thickness of the tail isbetween about 0.5 mm and about 10 mm; the width of the tail is betweenabout 0.5 cm and about 2.5 cm; and the length of the tail is betweenabout 10 and about 30 cm. The pad 500 further comprises wings 518 havinga length at least about 75% of the length of the pad, typically at leastabout 85% of the length of the pad.

In another embodiment, such as described in U.S. Pat. No. 6,629,965,Drevik, et al., the absorbent article narrows rearwardly so it will fiteffectively in the space between the wearer's buttocks and obtain goodabutment with the wearer's body along its full length. Such fit providesan effective seal against rearward leakage. The absorbent article has afront portion and a rear portion, and an absorbent body enclosed betweena liquid-permeable topsheet and a liquid-impermeable backsheet. Theabsorbent body comprises a central pad that extends from the front endof the front portion to the rear end of the rear portion, and two sidebodies that extend along the side edges of the central absorbent body onrespective sides thereof and along a part of the absorbent body. Thecentral absorbent body narrows rearwardly from a section of greatestwidth in the front portion to the end of the rear portion. The sidebodies extend rearwardly from a point on the tapering part of thecentral absorbent body that is located in the front part of the rear endof the article. Because the central absorbent body tapers or narrowsrearwardly, it will fit effectively in the space between the wearer'sbuttocks and obtain good abutment with the wearer's body along its fulllength. This provides an effective seal against rearward leakage. Theside bodies lie against the wearer's buttocks and therewith ensure aneffective seal against lateral leakage at the rear portion of thearticle.

Another article useful herein comprises elasticized side shields, suchas described in U.S. Pat. No. 6,773,424, Heyrman, et al., incorporatedherein by reference. In one embodiment shown in FIGS. 23 and 24, a pairof side shields 330 are formed on opposite sides of the sanitary pad ofFIG. 6 by a first elastic member 332 adjacent the first side of the padand a second elastic member 332 adjacent the second side of the pad, thefirst and second elastic members contracting at least a portion of thefirst and second sides. Each of the side shields has an upstanding end334 and a terminal end 336 adjacent the absorbent core 310 of the pad.The side shields may be formed by an extension of the topsheet, suchtopsheet 306 as shown in FIG. 24, in which event the side shields wouldtypically be glued along their terminal ends 336. Alternatively, theside shields may be formed as separate elements that are attached to thetopsheet, such as by gluing them to the topsheet. The side shields mayextend the entire length of the pad or they may be shorter such as shownin FIG. 23, in which event they typically would be formed as separateelements that are attached to the topsheet. The holding force providedby the crotch region of the holder herein combined with the fit withinthe low motion zone enhances the close body fit of the pad with suchelasticized side shields. The close body fit and low relative motionimproves urine side leakage protection versus that typically providedusing conventional undergarments.

In one embodiment, articles useful herein comprise a lotion coating, askin care composition, or a therapeutic composition that is at leastpartially transferable to the wearer's skin, such as described in U.S.Pat. No. 6,290,979, Roe, et al.; U.S. Pat. No. 6,156,024, Schulte, etal.; U.S. Pat. No. 5,609,587, Roe; U.S. Pat. No. 5,607,760, Roe; allincorporated herein by reference. The holder maintains the articlecomprising the lotion, skin care composition or therapeutic compositionin close bodily contact in the pudendal region and within the low-motionzone of the body, and thus provides improved transfer of the lotion,skin care composition or therapeutic composition to the skin. Thearticle may comprise one or more absorbent components or may be void ofany absorbent component. The article has a body-contacting surface suchas the topsheet described above and a holder-contacting surface such asthe backsheet described above, although in this article the topsheetneed not be liquid pervious and the backsheet need not be liquidimpervious. The lotion, skin care composition, or therapeuticcomposition is transferable to the wearer's skin in an effective amountto provide a skin health benefit or other therapeutic or health benefit.

One embodiment, such as described in U.S. Pat. No. 5,607,760, Roe,relates to an article having a lotion coating on the outer surfaceoriented toward the skin of the wearer, wherein at least a portion ofthe body-contacting surface of the article comprises a lotion coatingwhich is solid or semi-solid at 20° C. and which is partiallytransferable to the wearer's skin. The lotion typically comprises: (i)from about 5 to about 95% of a substantially water free emollient havinga plastic or fluid consistency at 20° C. and comprising a memberselected from the group consisting of petroleum based emollients, fattyacid ester emollients, alkyl ethoxylate emollients, polysiloxaneemollients, silicone wax emollients, and mixtures thereof; (ii) fromabout 5% to about 95% of an agent capable of immobilizing said emollienton the outer surface of the body-contacting surface, said immobilizingagent having a melting point of at least 35° C. and comprising a solidpolyol polyester comprising a polyhydric alcohol containing at least 4hydroxyl groups esterified with fatty acid or other organic radicalshaving from about 2 to about 30 carbon atoms. The quantity of lotioncoating on at least a portion of the body-contacting surface typicallyranges from about 0.1 mg/in² to about 25 mg/in², more typically fromabout 1 mg/in² to about 10 mg/in². Such lotioned articles providetherapeutic and/or protective lotion coating benefits. Because theemollient is substantially immobilized on the surface of the article,less lotion composition is needed to impart the desired benefits.Importantly, the lotion is easily transferable to the skin by way ofnormal contact, wearer motion, and/or body heat.

Another embodiment, such as described in U.S. Pat. No. 6,290,979, Roe etal., relates to an article having two or more skin care compositionsdisposed thereon. The skin care compositions, such as the lotionsdescribed above, may have different formulations such that the articlecan be designed to deliver specific skin care benefits to specificportions of the skin of the user. In one embodiment shown in FIG. 21,the sanitary pad of FIG. 5 further comprises a first region such asregion 220 and a second region such as region 222. The first region hasa first skin care composition disposed thereon that is semi-solid orsolid at 20° C. and partially transferable to a wearer's skin. Thesecond region has a second skin care composition disposed thereon thatis semi-solid or solid at 20° C. and partially transferable to awearer's skin. The first skin care composition has a differentformulation than the second skin care composition. The first skin carecomposition is disposed in an effective amount to provide a first skinhealth benefit and the second skin care composition is disposed in aneffective amount to provide a second skin health benefit. Alternatively,regions 220 and 222 may comprise the same or different lotions, skincare compositions, or therapeutic compositions, which are at leastpartially transferable to the wearer's skin.

The holder of this invention can also be used with an article capable ofbeing held in close bodily contact in the pudendal region by the holder,and comprising a sensor that is operatively connected to the article.The sensor is capable of detecting various target entities, includinginputs that correlate to elimination of bodily wastes, biologicalanalytes, etc., such as described in U.S. Pat. No. 6,570,053, Roe, etal.; and U.S. Pat. No. 6,713,660, Roe, et al.; both incorporated hereinby reference. The holder maintains the article in close bodily contactin the pudendal region and within the low-motion zone of the body, andthus provides improved sensor performance.

One embodiment, such as described in U.S. Pat. No. 6,570,053, Roe, etal., relates to an article that predicts the occurrence of an eventrelated to bodily waste, the wearer, the article, or a component orcomponents thereof using a proactive sensor, and responds to thisprediction by performing a function on the article or the wearer toprepare for or to delay the occurrence of the predicted event, or bysignaling the caretaker or the wearer that the event is about to occur.Such a sensor could also signal that an event has occurred. The articletypically comprises a sensor operatively connected to the article, thesensor being capable of detecting an input that correlates toelimination of bodily waste from the wearer; and means for signalingelimination of bodily waste. In one embodiment shown in FIG. 22, thesanitary pad of FIG. 5 further comprises such a sensor 224. The sensormay be integral with or separate from the article. The elimination ofbodily waste may include urination, discharge of menses, or defecation.The input may be a change in pressure, an electrical signal, or amotion, or combinations thereof. The article may or may not bedisposable, and may or may not comprise an absorbent component.

Another embodiment, such as described in U.S. Pat. No. 6,713,660, Roe,et al, relates to an article that comprises a biosensor including atleast one bio-recognition element and a transducer. The biosensor isadapted to detect a target biological analyte in bodily waste or on thewearer's skin. The article may comprise a biosensor adapted to detectone or more specific microorganisms and/or related biomolecules and tosignal the caretaker, the wearer, or an actuator of the occurrence. Thebio-recognition element may comprise a biologically reactive agent,typically selected from the groups consisting of an enzyme or sequenceof enzymes; an antibody; DNA; an organelle; a membrane receptor protein;a natural or synthetic cell membrane; viable or nonviable bacterial,plant, or animal cells; at least a portion of a nerve bundle; and atleast a portion of a sensing organ; and combinations thereof. Thebio-recognition element may be Acinetobacter baumannii TOI36 andBacillus sp TOI41. The biosensor is typically a biocatalytic biosensoror a bioaffinity biosensor. The bioaffinity biosensor may be achemoreceptor-based biosensor and an immunosensor. The biosensor maydetect target biological analytes selected from the group consisting ofpathogenic bacteria, colonic bacteria, viruses, parasites, bacterialtoxins, fungi, enzymes, and combinations thereof. The biosensor may alsodetect target biological analytes associated with a systemic or skinhealth condition in the wearer prior to the onset of clinicallyobservable symptoms of the condition. The biosensor typically detectsthe target biological analyte only above a pre-defined threshold level.In one embodiment shown in FIG. 22, the sanitary pad of FIG. 5 furthercomprises such a biosensor 226. The article may or may not bedisposable, and may or may not comprise an absorbent component.

Test Method for Measuring the Crotch Holding Force (CHF) of a MaterialUsing a “Constant-Rate-of-Extension (CRE) Ball Force Test”

Overview: This method measures a force (CHF) that is related to theholding force exerted by an extensible material when holding an articleagainst a wearer's body.

Terminology: The Crotch Holding Force (CHF) is the force exerted by amaterial when distending it with a force applied at right angles to theplane of the material, under the specified conditions. The angle ofapplication of force and the area of the material upon which the forceis applied varies continuously as the material stretches when tested asdirected in this method. In the Constant-Rate-of-Extension (CRE) tensiletesting machine, the rate of increase of the specimen length is uniformwith time.

Summary of Test Method: Set up the tensile testing machine forperforming this test in accordance with both the manufacture'sinstructions and procedures presented herein. A specimen of material issecurely clamped without tension within a “Ball Burst Test” attachment.A force is exerted against the specimen by a polished, hardened steelball attached to the tensile testing machine. Crotch Holding Force (CHF)data are recorded as a function of extension distance.

Apparatus: Tensile testing machine, of the constant-rate-of-extension(CRE) type. Equipment includes an Imada DPZ High PerformanceProgrammable Digital Force Gauge: Model DPZ-4, and an Imada MotorizedVertical Test Stand: Model MX-110-S Test Stand w/Digital Distance Meter,both available from Imada, Incorporated, Northbrook, Ill. The Force BallAttachment (a modified “Ball Burst Test” attachment) consists of aclamping mechanism to hold the specimen and a steel ball attached to themoveable force gauge of the tensile testing machine. The circularopening and ring clamp have an internal diameter of 5.1 cm (2.0 in). Thepolished steel ball connected to the force gauge has a diameter of 1.6cm (0.62 in).

Sampling and Specimen Preparation: The specimen is taken from the crotchregion of the holder. Clamp the specimen in the ring clamp of theapparatus. The specimen must be of sufficient diameter to be heldsecurely within the 5.1 cm (2.0 in) diameter ring clamp. The specimenmay not require cutting if there is ample room to securely clamp thespecimen in the apparatus. Ensure the specimen is free of folds,creases, or wrinkles, and is without tension when clamped. If thespecimen is not uniform (e.g., it has a pattern, stitching, or a seam,etc.), ensure that the area tested is representative of the crotchregion.

Procedure:

-   -   Place the specimen in the ring clamp, without tension, and        fasten securely.    -   Move the Force Ball to a position immediately adjacent the        specimen. Make sure there is no force applied to the ball by the        specimen (CHF-0.0=0 kgf).    -   Set the distance meter to zero (0 cm elongation).    -   Start the CRE machine and maintain a speed of 25.4+/−10 cm/min        (10.0+/−0.5 in/min). Continue that speed until the specimen is        extended at least 6.5 cm (2.6 in) or until a force of at least        2.0 kgf (4.5 lbf) is reached.    -   While the CRE machine and Force Ball are elongating the        specimen, record Crotch Holding Force and elongation data at 0.5        second intervals.    -   Create a standard stress/strain curve (Crotch Holding Force        versus elongation distance) with the resulting data.    -   Determine Crotch Holding Force (CHF) at the appropriate        elongation distances.    -   In the above method:        -   CHF-0.0 is the force at 0 cm specimen elongation, i.e., the            start of data collection. CHF-0.0 should be 0 kgf at 0 cm            elongation.        -   CHF-2.0 is the force (kgf) at 2.0 cm Force Ball extension            distance.        -   CHF-4.0 is the force (kgf) at 4.0 cm Force Ball extension            distance.        -   CHF-5.5 is the force (kgf) at 5.5 cm Force Ball extension            distance.        -   CHF-6.5 is the force (kgf) at 6.5 cm Force Ball extension            distance.            Test Method for Measuring the Elastic Holding Force (EHF) of            a Material Using A “Constant-Rate-of-Extension (CRE) Force            Test”

Overview: This method measures a force (EHF) that is related to theelastic force exerted by an extensible side elastic material attached toan extensible material.

Terminology: The Elastic Holding Force (EHF) is the force exerted by amaterial when distending it with a force applied at right angles to theplane of the material, under the specified conditions. The angle ofapplication of force and the area of the material upon which the forceis applied varies continuously as the material stretches when it istested as directed in this method. In the Constant-Rate-of-Extension(CRE) tensile testing machine, the rate of increase of the specimenlength is uniform with time.

Summary of Test Method: Set up the tensile testing machine forperforming this test in accordance with both the manufacture'sinstructions and procedures presented herein. A specimen of material issecurely clamped without tension within a “Ball Burst Test” attachment.A force is exerted against the specimen by a polished, hardened steelcylinder attached to the tensile testing machine. Elastic Holding Force(EHF) data are recorded as a function of extension distance

Apparatus: Tensile testing machine, of the constant-rate-of-extension(CRE) type. Equipment includes an Imada DPZ High PerformanceProgrammable Digital Force Gauge: Model DPZ-4 and an Imada MotorizedVertical Test Stand: Model MX-110-S Test Stand w/Digital Distance Meter,both available from Imada, Incorporated, Northbrook, Ill. The ForceCylinder Attachment (a modified “Ball Burst Test” attachment) consistsof a clamping mechanism to hold the specimen and a steel cylinderattached to the moveable force gauge of the tensile testing machine. Thecircular opening and ring clamp have an internal diameter of 5.1 cm (2.0in). The polished steel cylinder connected to the force gauge has adiameter of 1.6 cm (0.62 in) and a length of 1.6 cm (0.62 in).

Sampling and Specimen Preparation: The specimen is cut from the sideelastic attached to the crotch region of the holder. The side elastic tobe tested extends from the lateral centerline of the holder to 5.1 cm(2.0 in) above the lateral centerline. The specimen must be ofsufficient length to be held securely within the 5.1 cm (2.0 in)diameter ring clamp. The specimen must retain about 0.5 cm (0.2 in) ofthe crotch region material along the entire length of the specimen.Position the specimen perpendicular to the steel cylinder's longitudinalaxis and clamp it securely in the ring clamp. Ensure the specimen iswithout tension when clamped.

Procedure:

-   -   Place the specimen in the ring clamp, without tension,        perpendicular to the steel cylinder's longitudinal axis, and        fasten securely.    -   Move the Force Cylinder to a position immediately adjacent the        specimen. Make sure there is no force applied to the cylinder by        the specimen (EHF-0.0=0 kgf).    -   Set the distance meter to zero (0 cm elongation).    -   Start the CRE machine and maintain a speed of 12.7+/−10 cm/min        (5.0-0.5 in/min). Continue that speed until the specimen is        extended at least 6.4 cm (2.5 in) or until a force of at least        2.0 kgf (4.5 lbf) is reached.    -   While the CRE machine and Force Cylinder are elongating the        specimen, record Elastic Holding Force and elongation data at        0.5 second intervals.    -   Create a standard stress/strain curve (Elastic Holding Force        versus elongation distance) with the resulting data.    -   Determine Elastic Holding Force (EHF) at the appropriate        elongation distances.    -   In the above method:        -   EHF-0.0 is the force at 0 cm specimen elongation, i.e., the            start of data collection. EHF-0.0 should be 0 kgf at 0 cm            elongation.        -   EHF-4.5 is the force (kgf) at 4.5 cm Force Cylinder            extension distance.        -   EHF-5.5 is the force (kgf) at 5.5 cm Force Cylinder            extension distance.            Test Method for Measuring Caliper

A comparator gauge such as the Ames, Model 130 with dial indicator Model482, available from the B. C. Ames, Company of Waltham, Mass. is needed.The comparator gauge should typically have a circular comparator foot, aweight of 10.0 grams and a contact surface of 5.16 square centimeters.The gauge is further provided with an 80.0 gram weight to provide atotal of 0.25 psi pressure. The comparator gauge is zeroed. The weightis placed on the spindle extending above the comparator dial. Thecomparator foot is raised and the absorbent article, with any adhesiverelease paper being removed and the adhesive sprinkled with corn starch,is placed garment surface down on the base plate. The absorbent articleis positioned on the base plate so that when the foot is lowered, it isin the region of the article for which the measurement is desired. Tryto smooth out or avoid any wrinkles. Gently lower the foot onto theabsorbent article. Determine the caliper by reading the comparator dial30 seconds after the foot comes in contact with the surface.

Test Method for Measuring Flexure-Resistance

The flexure-resistance of the absorbent article is measured as peakbending stiffness. Peak bending stiffness is determined by a test whichis modeled after the ASTM D 4032-82 Circular Bend Procedure. The ASTMprocedure is modified for use herein. The Circular Bend Procedure asmodified and used for the purposes of the present invention ishereinafter simply referred to as the “Circular Bend Procedure”. Oneversion of the Circular Bend Procedure is described in U.S. Pat. No.5,009,653 issued to Osborn. The Circular Bend Procedure is asimultaneous multi-directional deformation of a material in which oneface of a specimen becomes concave and the other face becomes convex.The Circular Bend Procedure gives a force value related toflexure-resistance, simultaneously averaging stiffness in alldirections.

Apparatus: The apparatus necessary for the Circular Bend Procedure is amodified Circular Bend Stiffness Tester, having the following parts: Asmooth-polished steel plate platform which is 102.0 by 102.0 by 6.35millimeters having an 18.75 millimeter diameter orifice. The lap edge ofthe orifice should be at a 45 degree angle to a depth of 4.75millimeters. A plunger having an overall length of 72.2 millimeters, adiameter of 6.5 millimeters, a ball nose having a radius of 2.97millimeters and a needle-point extending 0.88 millimeter therefromhaving a 0.33 millimeter base diameter and a point having a radius ofless than 0.5 millimeter, the plunger being mounted concentric with theorifice and having equal clearance on all sides. Note that theneedle-point is merely to prevent lateral movement of the test specimenduring testing. Therefore, if the needle-point significantly adverselyaffects the test specimen (for example, punctures an inflatablestructure), then the needle-point should not be used. The bottom of theplunger should be set well above the top of the orifice plate. From thisposition, the downward stroke of the ball nose is to the exact bottom ofthe plate orifice. A force-measurement gauge and more specifically anInstron inverted compression load cell. The load cell has a load rangeof from about 0.0 to about 2000.0 grams. An actuator, and morespecifically the Instron Model No. 1122 having an inverted compressionload cell. The Instron 1122 is made by the Instron EngineeringCorporation, Canton, Mass.

Number and Preparation of Specimens: In order to perform the procedurefor this test, as explained below, five representative absorbentarticles are necessary. From one of the five articles to be tested, somenumber “Y” of 37.5 by 37.5 millimeter test specimens are cut. If due tothe plan view shape of the region to be tested, it is not possible tocut a square 37.5 by 37.5 mm. specimen, any other 1,400 squaremillimeter size specimen may be used, provided the specimen adequatelycovers the orifice in the test platform to properly carry out the test.If any of the significant absorbent portions of the absorbent articlemeet the parameters set forth in the appended claims for the particularregions, then the absorbent article falls within the scope of theappended claims. A number of different specimens should be tested fromeach absorbent article. In particular, the structurally least flexibleportions in the center of the absorbent article should be tested as thelongitudinal central region. The most flexible portions of the absorbentarticle should be tested when samples of the surrounding regions of thearticle are measured. The test specimens should not be folded, bent, orcompressed by the test person, and the handling of specimens must bekept to a minimum and to the edges to avoid affectingflexural-resistance properties. From the four remaining absorbentarticles, an equal number “Y” of specimens, identical to the specimenscut from the first article, are cut. Thus, the test person should have“Y” number of sets of five identical specimens.

Procedure: The procedure for the Circular Bend Procedure is as follows.The specimens are conditioned by leaving them in a room at a temperatureof 21+/−1° C. and 50+/−2% relative humidity for a period of two hours.The test plate is leveled. The plunger speed is set at 50.0 centimetersper minute per full stroke length. A specimen is centered on the orificeplatform below the plunger such that the body surface of the specimen isfacing the plunger and the garment surface of the specimen is facing theplatform with the release paper removed from any adhesive on the garmentsurface of the specimen and the adhesive sprinkled with corn starch toeliminate the adhesive tack. The indicator zero is checked and adjusted,if necessary. The plunger is actuated. Touching the specimen during thetesting should be avoided. The maximum force reading to the nearest gramis recorded. The above steps are repeated until all five of theidentical specimens have been tested.

Calculations: The peak bending stiffness for each specimen is themaximum force reading for that specimen. Each set of five identicalspecimens is tested and the five values received for that set areaveraged. Thus, the test person now has an average value for each of the“Y” identical sets of specimens tested.

Test Method for Measuring Absorbent Capacity

The capacity of an absorbent article is determined as follows. Any pantyadhesive release paper is removed from the article to be tested. Todetermine absorbent capacity, a sample comprising the entire articleminus any release paper is obtained. The sample is weighed to thenearest 0.1 gram. The sample is then submerged in a beaker of 1% sterilesaline (obtainable from the Baxter Travenol Company of Deerfield, Ill.),such that the sample is totally submerged and is not bent or otherwisetwisted or folded. The sample is submerged for 10 minutes. The sample isremoved from the saline and suspended for two minutes in a verticalposition to allow the saline to drain out of the sample. The sample isthen placed body-contacting surface down onto an absorbent blotter, suchas the filter paper #631 available from the Filtration Science Corp.,Eaton-Dikeman Division of Mount Holly Springs, Pa. A uniform 17.6 gramper square centimeter load is placed over the sample to squeeze excessfluid out. The absorbent blotter is replaced every 30 seconds until theamount of fluid transferred to the absorbent blotter is less than 0.5grams in a 30 second period. Next, the sample is weighed to the nearest0.1 gram and the dry weight of the sample is subtracted. The differencein grams is the absorbent capacity of the article.

All limits and ranges specified herein include all narrower ranges,limits, and amounts that are within the specified limits and ranges, andsuch narrower ranges and limits may be claimed even though those limitsand ranges are not separately listed.

While particular embodiments of the present invention have beenillustrated and described, various other changes and modifications canbe made without departing from the spirit and scope of the invention. Itis therefore intended to cover all such changes and modifications thatare within the scope of this invention.

1. A thong-shaped holder for holding an article in close bodily contactin the pudendal region, said holder having a longitudinal centerlinedefining a longitudinal direction and a lateral centerline defining alateral direction, said holder comprising: a) a front region; b) acrotch region attached to the front region, said crotch region having aCrotch Holding Force (CHF-4.0) of greater than about 0.1 kgf and aCrotch Holding Force (CHF-5.5) of less than about 1.0 kgf; and c) a rearregion attached to the front and crotch regions and cooperating with thefront region to provide an adjustable waistband.
 2. A holder accordingto claim 1 wherein the crotch region comprises knit material.
 3. Aholder according to claim 1 wherein the crotch region compriseselastomeric fiber material.
 4. A holder according to claim 1 wherein thecrotch region has a Crotch Holding Force (CHF-5.5) of less than about0.8 kgf.
 5. A holder according to claim 1 wherein the crotch region hasa width measured 10.0 cm above the lateral centerline of from about 6.0to about 15.0 cm, and a width at the lateral centerline of from about1.5 to about 10.0 cm.
 6. A holder according to claim 1 wherein thecrotch region has a width measured 10.0 cm above the lateral centerlineof from about 9.0 to about 11.0 cm, and a width at the lateralcenterline of from about 4.0 to about 5.0 cm.
 7. A holder according toclaim 1 wherein the rear region has a width measured 5.0 cm above thelateral centerline of from about 0.5 cm to about 5.0 cm.
 8. A holderaccording to claim 1 further comprising placement guides.
 9. A holderaccording to claim 1 further comprising at least one extension or panelextending beyond the front, crotch or rear region.
 10. A holderaccording to claim 1 further comprising side elastics.
 11. A holderaccording to claim 10 wherein the side elastics are substantiallystraight in the crotch region.
 12. A holder according to claim 11wherein the crotch region comprises knit material and has a widthmeasured 10.0 cm above the lateral centerline of from about 8.0 to about12.0 cm, and a width at the lateral centerline of from about 2.5 toabout 8.0 cm, and the rear region has a width measured 5.0 cm above thelateral centerline of from about 0.5 cm to about 5.0 cm.
 13. A holderaccording to claim 12 wherein the crotch region has a Crotch HoldingForce (CHF-5.5) of less than about 0.8 kgf.
 14. A thong-shaped holderfor holding an article in close bodily contact in the pudendal region,said holder having a longitudinal centerline defining a longitudinaldirection and a lateral centerline defining a lateral direction, saidholder comprising: a) a front region; b) a crotch region attached to thefront region, said crotch region having a Crotch Holding Force (CHF-4.0)of greater than about 0.1 kgf and a Crotch Holding Force (CHF-2.0) ofless than about 1.0 kgf; c) a rear region attached to the front andcrotch regions and cooperating with the front region to provide anadjustable waistband; and d) side elastics in the crotch region, saidside elastics having an Elastic Holding Force (EHF-4.5) of less thanabout 1.0 kgf.
 15. A holder according to claim 14 wherein the crotchregion comprises knit material.
 16. A holder according to claim 14wherein the crotch region comprises elastomeric fiber material.
 17. Aholder according to claim 14 wherein the crotch region has a CrotchHolding Force (CHF-4.0) of less than about 1.0 kgf.
 18. A holderaccording to claim 14 wherein the side elastics in the crotch regionhave an Elastic Holding Force (EHF-4.5) of less than about 0.8 kgf. 19.A holder according to claim 18 wherein the crotch region has a CrotchHolding Force (CHF-4.0) of less than about 1.0 kgf.
 20. A holderaccording to claim 14 wherein the crotch region has a width measured10.0 cm above the lateral centerline of from about 6.0 to about 15.0 cm,and a width at the lateral centerline of from about 1.5 to about 10.0cm.
 21. A holder according to claim 14 wherein the crotch region has awidth measured 10.0 cm above the lateral centerline of from about 9.0 toabout 11.0 cm, and a width at the lateral centerline of from about 4.0to about 5.0 cm.
 22. A holder according to claim 14 wherein the rearregion has a width measured 5.0 cm above the lateral centerline of fromabout 0.5 cm to about 5.0 cm.
 23. A holder according to claim 14 furthercomprising placement guides.
 24. A holder according to claim 14 furthercomprising at least one extension or panel extending beyond the front,crotch or rear region.
 25. A holder according to claim 14 wherein theside elastics are substantially straight in the crotch region.
 26. Aholder according to claim 14 wherein the crotch region comprises knitmaterial and has a width measured 10.0 cm above the lateral centerlineof from about 8.0 to about 12.0 cm, and a width at the lateralcenterline of from about 2.5 to about 8.0 cm, and the rear region has awidth measured 5.0 cm above the lateral centerline of from about 0.5 cmto about 5.0 cm.
 27. A holder according to claim 19 wherein the crotchregion comprises knit material and has a width measured 10.0 cm abovethe lateral centerline of from about 8.0 to about 12.0 cm, and a widthat the lateral centerline of from about 2.5 to about 8.0 cm, and therear region has a width measured 5.0 cm above the lateral centerline offrom about 0.5 cm to about 5.0 cm.
 28. A thong-shaped holder for holdingan article in close bodily contact in the pudendal region, said holderhaving a longitudinal centerline defining a longitudinal direction and alateral centerline defining a lateral direction, said holder comprising:a) a front region; b) a crotch region attached to the front region, saidcrotch region having a Crotch Holding Force (CHF-4.0) of greater thanabout 0.1 kgf and a Crotch Holding Force (CHF-5.5) of less than about1.0 kgf; c) a rear region attached to the front and crotch regions andcooperating with the front region to provide an adjustable waistband;and d) side elastics in the crotch region, said side elastics having anElastic Holding Force (EHF-4.5) of less than about 1.0 kgf.
 29. A holderaccording to claim 28 wherein the crotch region has a Crotch HoldingForce (CHF-5.5) of less than about 0.8 kgf.
 30. A holder according toclaim 29 wherein the side elastics in the crotch region have an ElasticHolding Force (EHF-4.5) of less than about 0.8 kgf.